What Comes After Trillion?

After a trillion comes a quadrillion (1,000 trillion), followed by quintillion, sextillion, septillion, octillion, nonillion, and decillion. Each step multiplies by a thousand.
 
After a trillion comes a quadrillion. In the U.S. number system, it goes: million, billion, trillion, and then quadrillion, which is equal to 1,000 trillion or 1 followed by 15 zeros (1,000,000,000,000,000).
 
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