Big black holes  SEP 12 2008

It looks like black holes can grow to be as massive as 50 billion suns. How massive is that? It's approximately 99 duodecillion kilograms....which is a 99 followed by 39 zeros. (Put another way, if you had 99 duodecillion dollars, you could buy as many PlayStation 3s as you wanted. Blows your mind, right?)