Quintillion

A quintillion is equal to 1018 in America, or 1030 in France and Germany.

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

1

In long scale:

1

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

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

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.
 * There are about 43.3 quintillion ways to arrange a 3&times;3&times;3.
 * 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
Only the had banknotes with this number in the denomination.

Approximations
For short scale: For long scale: