A billion is one thousand million, written as 1 with nine zeros: 1,000,000,000.
In scientific notation, it is 109.
In the UK a billion used to mean one million million (1012), but that usage is dying out.
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1, 000,000,000 minus 47,000,000 = 953,000,000
Five billion, five hundred million.
Seven hundred and fifty
nine tillon forty three six billon seven seven thousand fifty one six hundred
Quadrillion, quintillion, sextillion, etc. However, it soon becomes cumbersome to use such numbers - especially, to remember all the words and their meanings; also, there are two different definitions of "billion", "trillion", etc. For these reasons, for larger numbers, it is much more convenient to use scientific notation instead.