81631742842
81,631,742,842 is an even composite number composed of five prime numbers multiplied together.
81631742842 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 81631742842:
2 × 13 × 172 × 19 × 833
(2 × 13 × 17 × 17 × 19 × 83 × 83 × 83)See below for interesting mathematical facts about the number 81631742842 from the Numbermatics database.
Names of 81631742842
- Cardinal: 81631742842 can be written as Eighty-one billion, six hundred thirty-one million, seven hundred forty-two thousand, eight hundred forty-two.
Scientific notation
- Scientific notation: 8.1631742842 × 1010
Factors of 81631742842
Divisors of 81631742842
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 13 17 19 26 34 38 83 166 221 247 289 323 442 494 578 646 1079 1411 1577 2158 2822 3154 3757 4199 5491 6889 7514 8398 10982 13778 18343 20501 23987 26809 36686 41002 47974 53618 71383 89557 117113 130891 142766 179114 234226 261782 311831 348517 455753 571787 623662 697034 911506 1143574 1522469 1701583 1990921 2225147 3044938 3403166 3981842 4450294 5924789 7433231 9720379 10863953 11849578 14866462 19440758 21727906 25881973 28926911 37827499 51763946 57853822 75654998 126364927 141231389 165246443 184687201 252729854 282462778 330492886 369374402 491757487 983514974 2148203759 2400933613 3139682417 4296407518 4801867226 6279364834 40815871421 81631742842
- Sum of all divisors σ(n): 149250628800
- Sum of proper divisors (its aliquot sum) s(n): 67618885958
- 81631742842 is a deficient number, because the sum of its proper divisors (67618885958) is less than itself. Its deficiency is 14012856884
Bases of 81631742842
- Binary: 10011000000011010000110001011011110102
- Hexadecimal: 0x1301A18B7A
- Base-36: 11I1FJWA
Squares and roots of 81631742842
- 81631742842 squared (816317428422) is 6663741439422418236964
- 81631742842 cubed (816317428423) is 543972827548509766529616266811688
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The
square root of 81631742842 is 285712.6928262025 -
The
cube root of 81631742842 is 4337.9681223671
Scales and comparisons
How big is 81631742842?- 81,631,742,842 seconds is equal to 2,595 years, 33 weeks, 20 hours, 7 minutes, 22 seconds.
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To count from 1 to 81,631,742,842 would take you about five thousand, one hundred ninety-one 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 81631742842 cubic inches would be around 361.5 feet tall.
Recreational maths with 81631742842
- 81631742842 backwards is 24824713618
- The number of decimal digits it has is: 11
- The sum of 81631742842's digits is 46
- More coming soon!
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The information we have on file for 81631742842 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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