21553469721

21,553,469,721 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21553469721 look like?

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

21553469721 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 21553469721:

3² × 7² × 6991²

(3 × 3 × 7 × 7 × 6991 × 6991)

See below for interesting mathematical facts about the number 21553469721 from the Numbermatics database.

Names of 21553469721

Cardinal: 21553469721 can be written as Twenty-one billion, five hundred fifty-three million, four hundred sixty-nine thousand, seven hundred twenty-one.

Scientific notation

Scientific notation: 2.1553469721 × 10¹⁰

Factors of 21553469721

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 7001

Divisors of 21553469721

Number of divisors d(n): 27
Complete list of divisors:
1 3 7 9 21 49 63 147 441 6991 20973 48937 62919 146811 342559 440433 1027677 3083031 48874081 146622243 342118567 439866729 1026355701 2394829969 3079067103 7184489907 21553469721
Sum of all divisors σ(n): 36220875093
Sum of proper divisors (its aliquot sum) s(n): 14667405372
21553469721 is a deficient number, because the sum of its proper divisors (14667405372) is less than itself. Its deficiency is 6886064349

Bases of 21553469721

Binary: 10100000100101011111101100100011001₂
Hexadecimal: 0x504AFD919
Base-36: 9WGDNO9

Squares and roots of 21553469721

21553469721 squared (21553469721²) is 464552057014063817841
21553469721 cubed (21553469721³) is 10012708694680890168997653092361
21553469721 is a perfect square number. Its square root is 146811
The cube root of 21553469721 is 2782.9520993171

Scales and comparisons

How big is 21553469721?

21,553,469,721 seconds is equal to 685 years, 17 weeks, 2 days, 10 hours, 55 minutes, 21 seconds.
To count from 1 to 21,553,469,721 would take you about one thousand, three hundred seventy 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 21553469721 cubic inches would be around 231.9 feet tall.

Recreational maths with 21553469721

21553469721 backwards is 12796435512
The number of decimal digits it has is: 11
The sum of 21553469721's digits is 45
More coming soon!

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The information we have on file for 21553469721 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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