21591069721

21,591,069,721 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21591069721 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 27 divisors.

21591069721 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-seven divisors.

Prime factorization of 21591069721:

13² × 89² × 127²

(13 × 13 × 89 × 89 × 127 × 127)

See below for interesting mathematical facts about the number 21591069721 from the Numbermatics database.

Names of 21591069721

Cardinal: 21591069721 can be written as Twenty-one billion, five hundred ninety-one million, sixty-nine thousand, seven hundred twenty-one.

Scientific notation

Scientific notation: 2.1591069721 × 10¹⁰

Factors of 21591069721

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 229

Divisors of 21591069721

Number of divisors d(n): 27
Complete list of divisors:
1 13 89 127 169 1157 1651 7921 11303 15041 16129 21463 102973 146939 209677 1005967 1338649 1435481 1910207 2725801 13077571 18661253 127757809 170008423 242596289 1660851517 21591069721
Sum of all divisors σ(n): 23832973341
Sum of proper divisors (its aliquot sum) s(n): 2241903620
21591069721 is a deficient number, because the sum of its proper divisors (2241903620) is less than itself. Its deficiency is 19349166101

Bases of 21591069721

Binary: 10100000110111011011001010000011001₂
Hexadecimal: 0x506ED9419
Base-36: 9X2RK0P

Squares and roots of 21591069721

21591069721 squared (21591069721²) is 466174291697083017841
21591069721 cubed (21591069721³) is 10065201634169510850530117892361
21591069721 is a perfect square number. Its square root is 146939
The cube root of 21591069721 is 2784.5694446397

Scales and comparisons

How big is 21591069721?

21,591,069,721 seconds is equal to 686 years, 27 weeks, 3 days, 15 hours, 22 minutes, 1 second.
To count from 1 to 21,591,069,721 would take you about one thousand, three hundred seventy-three years!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 21591069721 cubic inches would be around 232 feet tall.

Recreational maths with 21591069721

21591069721 backwards is 12796019512
The number of decimal digits it has is: 11
The sum of 21591069721's digits is 43
More coming soon!

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The information we have on file for 21591069721 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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