9
The UK has officially adopted 109 as the billion
There are 5 0s.
its a 1 with a billion 0s behind it
There are Nine zeros in 51,000,000,000.
100,000,000,000 about four
1,000 1 million = 1,000,000 1 billion = 1,000,000,000 You need 1000 million to get 1 billion. FYI: 1 trillion = 1,000,000,000,000 (12 0s behind the one) if only I even have 10% or just 1% of the first value...
9 0s in 5 billion
In English-speaking countries a billion is 1,000,000,000, so 9 zeros. However, in many languages, that is a milliard and a billion is one thousand milliards or 1,000,000,000,000 - 12 zeros.
Six (1 000 000)
None. You could write is as 1,000 kilowatt and have 3 0s or 1,000,000 watts (6 0s) or 1,000,000,000 milliwatts (9 0s) etc.
The same as in 1 trillion - 12.