A

**quintillion**is equal to 10^{18}in America, or 10^{30}in France and Germany.^{[1]}This number is also called **hexillion** in Russ Rowlett's Greek-based naming system.^{[2]}

Donald Knuth calls this number **attiad** and **octyriad**, and it's equal to using the -yllion system.

## Decimal Edit

- 1,000,000,000,000,000,000 - short scale
- 1,000,000,000,000,000,000,000,000,000,000 - long scale

## Examples Edit

- 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.
^{[3]} - There are about 43.3 quintillion ways to arrange a 3×3×3 Rubik's Cube.
^{[4]} - The SI prefix exa- multiplies by one quintillion.
- The Earth's cross section has an area of about 1.275 quintillion square centimeters.
^{[5]} - By one estimate, there are 20 quintillion living animals on Earth.
^{[6]} - 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.

## Sources Edit

- ↑ Quintillion at Wolfram MathWorld
- ↑ Names for Large Numbers
- ↑ Template:Citation/CS1
- ↑ Notable Properties of Specific Numbers (page 18)
- ↑ Almost Infinite
- ↑ How Many Wild Animals Are There?

## See also Edit

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