6.8450693e+47, can someone write that number down in long form?

You use the LARD rule: Left Add Right Deduct. When moving the decimal to the Left, you Add to the power of ten, and when moving to the Right you Deduct from the power of ten.

You want to move the decimal 47 places to the right to get "long form" or ten to the zero power. That is over half a page. That's why nobody does it.