81431366040
81,431,366,040 is an even composite number composed of five prime numbers multiplied together.
81431366040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81431366040:
23 × 33 × 5 × 5821 × 12953
(2 × 2 × 2 × 3 × 3 × 3 × 5 × 5821 × 12953)See below for interesting mathematical facts about the number 81431366040 from the Numbermatics database.
Names of 81431366040
- Cardinal: 81431366040 can be written as Eighty-one billion, four hundred thirty-one million, three hundred sixty-six thousand and forty.
Scientific notation
- Scientific notation: 8.143136604 × 1010
Factors of 81431366040
Divisors of 81431366040
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 90 108 120 135 180 216 270 360 540 1080 5821 11642 12953 17463 23284 25906 29105 34926 38859 46568 51812 52389 58210 64765 69852 77718 87315 103624 104778 116420 116577 129530 139704 155436 157167 174630 194295 209556 232840 233154 259060 261945 310872 314334 349260 349731 388590 419112 466308 518120 523890 582885 628668 698520 699462 777180 785835 932616 1047780 1165770 1257336 1398924 1554360 1571670 1748655 2095560 2331540 2797848 3143340 3497310 4663080 6286680 6994620 13989240 75399413 150798826 226198239 301597652 376997065 452396478 603195304 678594717 753994130 904792956 1130991195 1357189434 1507988260 1809585912 2035784151 2261982390 2714378868 3015976520 3392973585 4071568302 4523964780 5428757736 6785947170 8143136604 9047929560 10178920755 13571894340 16286273208 20357841510 27143788680 40715683020 81431366040
- Sum of all divisors σ(n): 271505476800
- Sum of proper divisors (its aliquot sum) s(n): 190074110760
- 81431366040 is an abundant number, because the sum of its proper divisors (190074110760) is greater than itself. Its abundance is 108642744720
Bases of 81431366040
- Binary: 10010111101011011000000001001100110002
- Hexadecimal: 0x12F5B00998
- Base-36: 11EQ4S60
Squares and roots of 81431366040
- 81431366040 squared (814313660402) is 6631067375140465281600
- 81431366040 cubed (814313660403) is 539976874660965224761881276864000
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The
square root of 81431366040 is 285361.8160160885 -
The
cube root of 81431366040 is 4334.4158262637
Scales and comparisons
How big is 81431366040?- 81,431,366,040 seconds is equal to 2,589 years, 13 weeks, 5 days, 15 hours, 54 minutes.
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To count from 1 to 81,431,366,040 would take you about five thousand, one hundred seventy-eight 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 81431366040 cubic inches would be around 361.2 feet tall.
Recreational maths with 81431366040
- 81431366040 backwards is 04066313418
- 81431366040 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81431366040's digits is 36
- More coming soon!
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The information we have on file for 81431366040 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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