Google's federal tax ID #

I have been searching for it, but couldn’t find it anywhere. Could someone tell me, what is Google Inc’s federal tax ID number?

Why do you need Google’s tax id?

In my tax declaration I need some sort of company register code (for the payee of adsense checks i.e. Google inc.). I guess this register code is used in (Eastern) Europe, but can’t find any equivalent of it in United States. At the moment I was told from the tax board, that the register code doesn’t need to be filled for US companies, so no problem any more.

Btw: it’s EIN (which you could probably use, since it is often used as a Tax ID number) is 770493581.