Unless your trusted source was from August 15th/16th 2010, which might have brought on some stressful adrenaline pumps to the total number of Bitcoins at the time, then your sources are wrong, and should probably resort to finding more consolidates mainstream entities (or the search function here).

Anecdotally (from today’s point of view), for a gap of time under 24 hours (hours really until  there was a patch), someone managed to create a TX with 92.233.720.368,54277039 BTCs, exploiting (allegedly maliciously) what is known as the value overflow incident.