Assume there are approximately 5,000,000,000 people on earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hands?
(If you cannot estimate the number, then try to guess how long the number would be.)
There is at least one person on the planet without a left hand.
Otherwise 5^(5*10^9) = approx 10^(3.5*10^9)