Some quick notes about numbers

Real Numbers: million, billion, quintillion, googolplex

Imaginary Numbers*: jillion, kajilion, zillion, gazillion, berylian, majilion

More interestingly:

In the PBS science program Cosmos: A Personal Voyage, Episode 9: “The Lives of the Stars”, astronomer and television personality Carl Sagan estimated that writing a googolplex in numerals (i.e., “10,000,000,000…”) would be physically impossible, since doing so would require more space than the known universe occupies. – wikipedia

* Not the kind Descartes would have made fun of.