Assuming the first digit is 1, you can call this "ten to the power 700".
There is not specific name but you could call it a heptagoogol. You would then spend a lot of time explaining what the number was so "10 to the power 700" is much simpler.
no number
That number quintillion.
A one to three digit number followed by six zeros is millions
Add two zeros to the number - resulting in 70,000 !
Septillion
uncentillion.
Trillion.
nonillion
That depends how many zeros follow the 1.
If you meant a number followed by 100 zeros, that would be Google if the number was a 1. If you meant 100 zeros followed by a number, that would be just that number.
700,000,000 (eight zeros).
any number containing 100 zeros has 100 zeros but i'm assuming you mean a 1 fallowed by 100 consecutive zeros; that is a Googol or 10,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000,­000