18121231665216
18,121,231,665,216 is an even composite number composed of four prime numbers multiplied together.
18121231665216 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred eighty-nine divisors.
Prime factorization of 18121231665216:
26 × 32 × 832 × 21372
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 83 × 83 × 2137 × 2137)See below for interesting mathematical facts about the number 18121231665216 from the Numbermatics database.
Names of 18121231665216
- Cardinal: 18121231665216 can be written as Eighteen trillion, one hundred twenty-one billion, two hundred thirty-one million, six hundred sixty-five thousand, two hundred sixteen.
Scientific notation
- Scientific notation: 1.8121231665216 × 1013
Factors of 18121231665216
Divisors of 18121231665216
- Number of divisors d(n): 189
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 83 96 144 166 192 249 288 332 498 576 664 747 996 1328 1494 1992 2137 2656 2988 3984 4274 5312 5976 6411 6889 7968 8548 11952 12822 13778 15936 17096 19233 20667 23904 25644 27556 34192 38466 41334 47808 51288 55112 62001 68384 76932 82668 102576 110224 124002 136768 153864 165336 177371 205152 220448 248004 307728 330672 354742 410304 440896 496008 532113 615456 661344 709484 992016 1064226 1230912 1322688 1418968 1596339 1984032 2128452 2837936 3192678 3968064 4256904 4566769 5675872 6385356 8513808 9133538 11351744 12770712 13700307 14721793 17027616 18267076 25541424 27400614 29443586 34055232 36534152 41100921 44165379 51082848 54801228 58887172 73068304 82201842 88330758 102165696 109602456 117774344 132496137 146136608 164403684 176661516 219204912 235548688 264992274 292273216 328807368 353323032 379041827 438409824 471097376 529984548 657614736 706646064 758083654 876819648 942194752 1059969096 1137125481 1315229472 1413292128 1516167308 2119938192 2274250962 2630458944 2826584256 3032334616 3411376443 4239876384 4548501924 6064669232 6822752886 8479752768 9097003848 12129338464 13645505772 18194007696 24258676928 27291011544 31460471641 36388015392 54582023088 62920943282 72776030784 94381414923 109164046176 125841886564 188762829846 218328092352 251683773128 283144244769 377525659692 503367546256 566288489538 755051319384 1006735092512 1132576979076 1510102638768 2013470185024 2265153958152 3020205277536 4530307916304 6040410555072 9060615832608 18121231665216
- Sum of all divisors σ(n): 52599190031661
- Sum of proper divisors (its aliquot sum) s(n): 34477958366445
- 18121231665216 is an abundant number, because the sum of its proper divisors (34477958366445) is greater than itself. Its abundance is 16356726701229
Bases of 18121231665216
- Binary: 1000001111011001011011001001110001000010000002
- Hexadecimal: 0x107B2D938840
- Base-36: 6F8S1GGG0
Squares and roots of 18121231665216
- 18121231665216 squared (181212316652162) is 328379037064427044304326656
- 18121231665216 cubed (181212316652163) is 5950632604645033872335838336780496797696
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18121231665216 is a
perfect square number . Itssquare root is 4256904 -
The
cube root of 18121231665216 is 26266.1187969395
Scales and comparisons
How big is 18121231665216?- 18,121,231,665,216 seconds is equal to 576,199 years, 5 weeks, 6 days, 14 hours, 33 minutes, 36 seconds.
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To count from 1 to 18,121,231,665,216 would take you about one million, four hundred forty thousand, four hundred ninety-seven 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 18121231665216 cubic inches would be around 2188.8 feet tall.
Recreational maths with 18121231665216
- 18121231665216 backwards is 61256613212181
- The number of decimal digits it has is: 14
- The sum of 18121231665216's digits is 45
- More coming soon!
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