When I was born, I was the 3,278,027,429th person alive on Earth.

I am also the 77,140,671,365th person to have lived since history began.

The world's population for 2011 has now reached 7 billion, and the BBC has come up with a nifty gadget to estimates where you fit in to all these population numbers. 

Simply click on this BBC link and enter your birth date to find out where you rank.