(10^10)*(9^9)*(8^8)*(7^7)*(6^6)*(5^5)*(4^4)*(3^3)*(2^2)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.