I write 620 billion as 620 billion.
Sixteen point two billion is how I would write it.
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
It is: 206/1000 = 0.206 as a decimal
I write 620 billion as 620 billion.
The Daily Orbit - 2012 A Billion Pixels of Mars 1-206 was released on: USA: 20 June 2013
Sixteen point two billion is how I would write it.
You write 3.56 billion as 3,560,000,000.
You write it as XXX 206, where XXX is the three character ISO 4217 currency code. For example, AUD for Australian Dollar, BBD for Barbados Dollar and so on, to ZWD for Zimbabwean Dollar.
Doscientos seis.
40,300,000,000
As a number it is: 1,800,000,000 = 1.8 billion
It is: 206
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