A quintillion is equal to 1018 in America, or 1030 in France and Germany.
This number is also called hexillion in Russ Rowlett's Greek-based naming system.
- Niagara Falls takes up 210,000 years (about 30 times all recorded history) to use up a quintillion gallons of water.
- A single drop of water contains 1.7 quintillion water molecules.
- The distance from the Milky way to Andromeda is 2 million light years, which is about 11.73 quintillion miles.
- The entire Earth contains about 326 quintillion gallons of water.
- There are about 43.3 quintillion ways to arrange a 3×3×3 Rubik's Cube.
- The SI prefix exa- multiplies by one quintillion.
- The Earth's cross section has an area of about 1.275 quintillion square centimeters. 
- By one estimate, there are 20 quintillion living animals on Earth.
- a tower of a quintillion one dollar bills would aproximately measure 1.099*10^20m in height.
As a banknote denomination Edit
Only the Hungarian pengő had banknotes with this number in the denomination.
- ↑ Quintillion at Wolfram MathWorld
- ↑ Names for Large Numbers
- ↑ Aarex Tiaokhiao's illion numbers
- ↑ Part 1 (LAN) - Aarex Googology
- ↑ Saibian, Sbiis. 2.1.4 - Everyday Large Numbers for a Modern World. Retrieved 2013-06-11.
- ↑ Notable Properties of Specific Numbers (page 18)
- ↑ Almost Infinite
- ↑ How Many Wild Animals Are There?