As a number it is 12,800,000,000 = 12.8 billion
83,063,044,128
128 million
2x2x2x2x2x2x2=128 27 = 128
I write 620 billion as 620 billion.
128 = CXXVIII
128 = 27
Sixteen point two billion is how I would write it.
128% = 1.28 = 128/100 = 32/25
You write 3.56 billion as 3,560,000,000.
128/100 1.28
40,300,000,000
128/1000 = 128 divided by 1,000 = 0.128