81438907439472
81,438,907,439,472 is an even composite number composed of seven prime numbers multiplied together.
81438907439472 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 81438907439472:
24 × 3 × 11 × 19 × 29 × 2879 × 97231
(2 × 2 × 2 × 2 × 3 × 11 × 19 × 29 × 2879 × 97231)See below for interesting mathematical facts about the number 81438907439472 from the Numbermatics database.
Names of 81438907439472
- Cardinal: 81438907439472 can be written as Eighty-one trillion, four hundred thirty-eight billion, nine hundred seven million, four hundred thirty-nine thousand, four hundred seventy-two.
Scientific notation
- Scientific notation: 8.1438907439472 × 1013
Factors of 81438907439472
Divisors of 81438907439472
- Number of divisors d(n): 320
-
Complete list of divisors:
1 2 3 4 6 8 11 12 16 19 22 24 29 33 38 44 48 57 58 66 76 87 88 114 116 132 152 174 176 209 228 232 264 304 319 348 418 456 464 528 551 627 638 696 836 912 957 1102 1254 1276 1392 1653 1672 1914 2204 2508 2552 2879 3306 3344 3828 4408 5016 5104 5758 6061 6612 7656 8637 8816 10032 11516 12122 13224 15312 17274 18183 23032 24244 26448 31669 34548 36366 46064 48488 54701 63338 69096 72732 83491 95007 96976 97231 109402 126676 138192 145464 164103 166982 190014 194462 218804 250473 253352 290928 291693 328206 333964 380028 388924 437608 500946 506704 583386 601711 656412 667928 760056 777848 875216 918401 1001892 1069541 1166772 1203422 1312824 1335856 1520112 1555696 1586329 1805133 1836802 1847389 2003784 2139082 2333544 2406844 2625648 2755203 2819699 3172658 3208623 3610266 3673604 3694778 4007568 4278164 4667088 4758987 4813688 5510406 5542167 5639398 6345316 6417246 7220532 7347208 7389556 8459097 8556328 9517974 9627376 11020812 11084334 11278796 12690632 12834492 14441064 14694416 14779112 16918194 17112656 17449619 19035948 20321279 22041624 22168668 22557592 25381264 25668984 28882128 29558224 31016689 33836388 34899238 38071896 40642558 44083248 44337336 45115184 51337968 52348857 53574281 60963837 62033378 67672776 69798476 76143792 81285116 88674672 93050067 104697714 107148562 121927674 124066756 135345552 139596952 160722843 162570232 186100134 209395428 214297124 243855348 248133512 279193904 279928049 321445686 325140464 372200268 418790856 428594248 487710696 496267024 559856098 589317091 642891372 744400536 837581712 839784147 857188496 975421392 1119712196 1178634182 1285782744 1488801072 1679568294 1767951273 2239424392 2357268364 2571565488 3079208539 3359136588 3535902546 4478848784 4714536728 5318632931 6158417078 6718273176 7071805092 8117913421 9237625617 9429073456 10637265862 12316834156 13436546352 14143610184 15955898793 16235826842 18475251234 21274531724 24353740263 24633668312 28287220368 31911797586 32471653684 36950502468 42549063448 48707480526 49267336624 58504962241 63823595172 64943307368 73901004936 85098126896 89297047631 97414961052 117009924482 127647190344 129886614736 147802009872 154240354999 175514886723 178594095262 194829922104 234019848964 255294380688 267891142893 308480709998 351029773446 357188190524 389659844208 462721064997 468039697928 535782285786 616961419996 702059546892 714376381048 925442129994 936079395856 1071564571572 1233922839992 1404119093784 1428752762096 1696643904989 1850884259988 2143129143144 2467845679984 2808238187568 3393287809978 3701768519976 4286258286288 5089931714967 6786575619956 7403537039952 10179863429934 13573151239912 20359726859868 27146302479824 40719453719736 81438907439472
- Sum of all divisors σ(n): 250009141248000
- Sum of proper divisors (its aliquot sum) s(n): 168570233808528
- 81438907439472 is an abundant number, because the sum of its proper divisors (168570233808528) is greater than itself. Its abundance is 87131326369056
Bases of 81438907439472
- Binary: 100101000010001011110010010011000011001011100002
- Hexadecimal: 0x4A1179261970
- Base-36: SV8IMSRQO
Squares and roots of 81438907439472
- 81438907439472 squared (814389074394722) is 6632295644934887867343638784
- 81438907439472 cubed (814389074394723) is 540126911139065585754851976809012711682048
-
The
square root of 81438907439472 is 9024350.8043222699 -
The
cube root of 81438907439472 is 43345.4962627141
Scales and comparisons
How big is 81438907439472?- 81,438,907,439,472 seconds is equal to 2,589,505 years, 18 weeks, 1 day, 5 hours, 11 minutes, 12 seconds.
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To count from 1 to 81,438,907,439,472 would take you about six million, four hundred seventy-three thousand, seven hundred sixty-three 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 81438907439472 cubic inches would be around 3612.1 feet tall.
Recreational maths with 81438907439472
- 81438907439472 backwards is 27493470983418
- The number of decimal digits it has is: 14
- The sum of 81438907439472's digits is 69
- More coming soon!
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