632,000,000,000
six hundred thirty-two
I write 620 billion as 620 billion.
seiscientos treinta y dos
Sixteen point two billion is how I would write it.
6.32 x 102
632
You write 3.56 billion as 3,560,000,000.
632 written in expanded form is (6*100) + (3*10) + (2*1)
40,300,000,000
As a number it is: 1,800,000,000 = 1.8 billion
Since you asked how I would write the number, the answer is 1031.
1,000 billion billion is: 1,000,000,000,000,000,000,000