Quintillion

Written out in decimal form quintillion (in the short scale) is:

In long scale:

This number is also called hexillion in Russ Rowlett's Greek-based naming system.^[2]

Aarex Tiaokhiao calls this number hetillion.^[3] He also gave name ocdoocol and 18-noogol, referring to the short scale value of this number.^[4]

Decimal

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

Examples

• 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.^[5]
• There are about 43.3 quintillion ways to arrange a 3×3×3 Rubik's Cube.^[6]
• The SI prefix exa- multiplies by one quintillion.
• The Earth's cross section has an area of about 1.275 quintillion square centimeters. ^[7]
• By one estimate, there are 20 quintillion living animals on Earth.^[8]
• a tower of a quintillion one dollar bills would aproximately measure 1.099*10^20m in height.

As a banknote denomination

Only the Hungarian pengő had banknotes with this number in the denomination.

Approximations

For short scale:

For long scale:

Sources

1. ↑ Quintillion at Wolfram MathWorld
2. ↑ Names for Large Numbers
3. ↑ Aarex Tiaokhiao's illion numbers
4. ↑ Part 1 (LAN) - Aarex Googology
5. ↑ Saibian, Sbiis. 2.1.4 - Everyday Large Numbers for a Modern World. Retrieved 2013-06-11.
6. ↑ Notable Properties of Specific Numbers (page 18)
7. ↑ Almost Infinite
8. ↑ How Many Wild Animals Are There?

See also

• quintyllion