The number name "trillion" is used by two competing numbering systems.
On the "short scale" used in the US and officially now by the UK, the number name "trillion" means one thousand billion, or 1 x 1012, or 1,000,000,000,000.
On the "long scale of Europe, Latin America, and other areas of the world, a "trillion" is one million billion, which is one million million million. Under this scale a trillion is 1 x 1018, a much larger number.
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A trillion multiplied by a trillion is usually just referred to as a trillion trillion. But the actual term for it is an octillion.
One trillion = 1000000000000. The next 10 numbers are: One trillion and one, One trillion and two, One trillion and three, One trillion and four, One trillion and five, One trillion and six, One trillion and seven, One trillion and eight, One trillion and nine and One trillion and ten. (1000000000001, 1000000000002, 1000000000003, 1000000000004, 1000000000005, 1000000000006, 1000000000007, 1000000000008, 1000000000009, 1000000000010
70 trillion trillion.
Strangely enough, it is 100 trillion!
a trillion and 1