81387740348816
81,387,740,348,816 is an even composite number composed of four prime numbers multiplied together.
What does the number 81387740348816 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 300 divisors.
81387740348816 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of three hundred divisors.
Prime factorization of 81387740348816:
24 × 114 × 413 × 712
(2 × 2 × 2 × 2 × 11 × 11 × 11 × 11 × 41 × 41 × 41 × 71 × 71)See below for interesting mathematical facts about the number 81387740348816 from the Numbermatics database.
Names of 81387740348816
- Cardinal: 81387740348816 can be written as Eighty-one trillion, three hundred eighty-seven billion, seven hundred forty million, three hundred forty-eight thousand, eight hundred sixteen.
Scientific notation
- Scientific notation: 8.1387740348816 × 1013
Factors of 81387740348816
Divisors of 81387740348816
- Number of divisors d(n): 300
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Complete list of divisors:
1 2 4 8 11 16 22 41 44 71 82 88 121 142 164 176 242 284 328 451 484 568 656 781 902 968 1136 1331 1562 1681 1804 1936 2662 2911 3124 3362 3608 4961 5041 5324 5822 6248 6724 7216 8591 9922 10082 10648 11644 12496 13448 14641 17182 18491 19844 20164 21296 23288 26896 29282 32021 34364 36982 39688 40328 46576 54571 55451 58564 64042 68728 68921 73964 79376 80656 94501 109142 110902 117128 119351 128084 137456 137842 147928 189002 203401 206681 218284 221804 234256 238702 256168 275684 295856 352231 378004 406802 413362 436568 443608 477404 512336 551368 600281 609961 704462 756008 758131 813604 826724 873136 887216 954808 1039511 1102736 1200562 1219922 1312861 1408924 1512016 1516262 1627208 1653448 1909616 2079022 2237411 2273491 2401124 2439844 2625722 2817848 3032524 3254416 3306896 3874541 4158044 4474822 4546982 4802248 4879688 4893391 5251444 5635696 6065048 6709571 7749082 8316088 8339441 8473921 8949644 9093964 9604496 9759376 9786782 10502888 12130096 13419142 14441471 15498164 16632176 16678882 16947842 17899288 18187928 19573564 21005776 24611521 25008401 26838284 28882942 30996328 33357764 33895684 35798576 36375856 39147128 42619951 49223042 50016802 53676568 53827301 57765884 61992656 66715528 67791368 73805281 78294256 85239902 91733851 93213131 98446084 100033604 107353136 107654602 115531768 133431056 135582736 147610562 158856181 170479804 183467702 186426262 196892168 200067208 215309204 231063536 275092411 295221124 317712362 340959608 347430761 366935404 372852524 393784336 400134416 430618408 550184822 590442248 592100311 635424724 681919216 694861522 733870808 745705048 861236816 1009072361 1025344441 1100369644 1180884496 1184200622 1270849448 1389723044 1467741616 1491410096 1747417991 2018144722 2050688882 2200739288 2368401244 2541698896 2779446088 3026016521 3494835982 3821738371 4036289444 4101377764 4401478576 4736802488 5558892176 6052033042 6513103421 6989671964 7643476742 8072578888 8202755528 9473604976 11278788851 12104066084 13026206842 13979343928 15286953484 16145157776 16405511056 22557577702 24208132168 26052413684 27958687856 30573906968 42039122081 45115155404 48416264336 52104827368 61147813936 71644137631 84078244162 90230310808 104209654736 124066677361 143288275262 168156488324 180460621616 248133354722 286576550524 336312976648 462430342891 496266709444 573153101048 672625953296 924860685782 992533418888 1146306202096 1849721371564 1985066837776 3699442743128 5086733771801 7398885486256 10173467543602 20346935087204 40693870174408 81387740348816
- Sum of all divisors σ(n): 180332289934860
- Sum of proper divisors (its aliquot sum) s(n): 98944549586044
- 81387740348816 is an abundant number, because the sum of its proper divisors (98944549586044) is greater than itself. Its abundance is 17556809237228
Bases of 81387740348816
- Binary: 100101000000101100011110101101001000001100100002
- Hexadecimal: 0x4A058F5A4190
- Base-36: SUL0F8FWW
Squares and roots of 81387740348816
- 81387740348816 squared (813877403488162) is 6623964279086291953352601856
- 81387740348816 cubed (813877403488163) is 539109484826107291037317702180286609002496
-
The
square root of 81387740348816 is 9021515.4131008391 -
The
cube root of 81387740348816 is 43336.4165420811
Scales and comparisons
How big is 81387740348816?- 81,387,740,348,816 seconds is equal to 2,587,878 years, 20 weeks, 3 days, 12 hours, 26 minutes, 56 seconds.
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To count from 1 to 81,387,740,348,816 would take you about six million, four hundred sixty-nine thousand, six hundred ninety-five 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 81387740348816 cubic inches would be around 3611.4 feet tall.
Recreational maths with 81387740348816
- 81387740348816 backwards is 61884304778318
- The number of decimal digits it has is: 14
- The sum of 81387740348816's digits is 68
- More coming soon!
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