Sixteen point two billion is how I would write it.
162.000.000.000
eight hundred fifty billion,seventy million,one hundred sixty two.
I write 620 billion as 620 billion.
You write 3.56 billion as 3,560,000,000.
1,000 billion billion is: 1,000,000,000,000,000,000,000
Since you asked how I would write the number, the answer is 1031.
35.9204067 billion
how to write 5.1 billion
u write four billion like 4,0000,000,000
200 billion billion in numerals is: 200,000,000,000,000,000,000
Ways to write one billion is: one billion,1 billion,1,000,000,000,you can write it in roman numeral several different ways,with tally marks, etc.
1.billion