2006: The year Twitter was founded
4: Number of founders (Jack Dorsey, Ev Williams, Biz Stone, Noah Glass)
140: The maximum number of characters in a tweet
40404: The phone number you can text to send a tweet
10958: The phone number Twitter’s founders originally used, before ditching it for something more memorable
208: Average number of Twitter followers per user, according to an October 2012 study
102: Average number of accounts that a Twitter user follows, according to the same study
20,000: Number of tweets sent per day in March 2007
400,000,000: Number of tweets sent per day, in March 2013
300,000: Tweets per minute during Miley Cyrus’ performance at the VMAs
143,199: Tweets per second, during a screening of “Castle in the Sky” in Japan this summer, which set the record for tweet volume
3,051: Tweets per second at the conclusion of the 2010 World Cup, which was the record at that time
500,000,000: Number of Twitter users, per one March estimate
20,000,000: Number of fake Twitter accounts, per the New York Times, in April 2013
54,365: Number of verified accounts, which Twitter uses to "establish authenticity of identities of key individuals and brands on Twitter," as of Sept. 12.
40: Percentage of Twitter users who read the service but don’t tweet, per Twitter in 2011
999,999,999: Maximum number of dollars, in revenue, that Twitter had in 2012. (Twitter was allowed to file for a “Secret IPO,” which means its maximum revenue for the previous year was $1 billion.)
170 billion: Number of tweets archived by the Library of Congress, as of January 2013
44,447,830: Followers for Justin Bieber, the most followed person on Twitter
42,644,973: Followers for Katy Perry, the second-most followed person on Twitter
40,099,896: Followers for Lady Gaga, the third-most followed person on Twitter
36,523,902: Followers for Barack Obama, the fourth-most followed person on Twitter
793,951: Retweets for this tweet — Barack Obama’s victory tweet — which is the most retweeted tweet of all time.
7,382: The number of Twitter followers that @YahooTech has. You can follow us on Twitter right here.