You have to think creatively to understand large numbers. I remember Neil Degrasse Tyson mentioning the US debt which is around, idk, 14/15 trillion big ones. Basically, he explained that Most Americans can't comprehend how LARGE the number is, so they don't realize the shithole we're buried in. We could wrap 15 trillion cheeseburgers around the earth twice, stack them to the moon and back down to Earth.
---------- Post added at 04:20 PM ---------- Previous post was at 03:59 PM ----------
In regards to a googol/googolplex, here's a video.
http://youtu.be/0lFQOmb6mVs