I write 620 billion as 620 billion.
Sixteen point two billion is how I would write it.
You can write 38% as .38 or as 38/100 or 19/50 if you prefer.
You write 3.56 billion as 3,560,000,000.
40,300,000,000
You write 38 billion (38,000,000,000) in standard form as 3.8 × 1010
38,000,000,000
It is ABC38,000,000,000 where ABC is the ISO code for the currency. There is a different currency code for dollars from different countries.
I write 620 billion as 620 billion.
Sixteen point two billion is how I would write it.
You can write 38% as .38 or as 38/100 or 19/50 if you prefer.
You write 3.56 billion as 3,560,000,000.
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
38 = 38/1.