81500120988
81,500,120,988 is an even composite number composed of eight prime numbers multiplied together.
81500120988 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of five hundred seventy-six divisors.
Prime factorization of 81500120988:
22 × 3 × 11 × 13 × 17 × 192 × 71 × 109
(2 × 2 × 3 × 11 × 13 × 17 × 19 × 19 × 71 × 109)See below for interesting mathematical facts about the number 81500120988 from the Numbermatics database.
Names of 81500120988
- Cardinal: 81500120988 can be written as Eighty-one billion, five hundred million, one hundred twenty thousand, nine hundred eighty-eight.
Scientific notation
- Scientific notation: 8.1500120988 × 1010
Factors of 81500120988
Divisors of 81500120988
- Number of divisors d(n): 576
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Complete list of divisors:
1 2 3 4 6 11 12 13 17 19 22 26 33 34 38 39 44 51 52 57 66 68 71 76 78 102 109 114 132 142 143 156 187 204 209 213 218 221 228 247 284 286 323 327 361 374 418 426 429 436 442 494 561 572 627 646 654 663 722 741 748 781 836 852 858 884 923 969 988 1083 1122 1199 1207 1254 1292 1308 1326 1349 1417 1444 1482 1562 1716 1846 1853 1938 2071 2166 2244 2343 2398 2414 2431 2508 2652 2698 2717 2769 2834 2964 3124 3553 3597 3621 3692 3706 3876 3971 4047 4142 4199 4251 4332 4686 4693 4796 4828 4862 5396 5434 5538 5559 5668 6137 6213 7106 7194 7242 7293 7412 7739 7942 8094 8151 8284 8398 8502 9372 9386 9724 10153 10659 10868 11076 11118 11913 12274 12426 12597 13277 14079 14212 14388 14484 14586 14839 15478 15587 15691 15884 16188 16302 16796 17004 17537 18411 18772 20306 20383 21318 22236 22781 22933 23217 23826 24089 24548 24852 25194 25631 26554 26923 28158 29172 29678 30459 30956 31174 31382 32604 35074 35207 36822 39349 39831 40612 40766 42636 44517 45562 45866 46189 46434 46761 47073 47652 48178 50388 51262 51623 52611 53108 53846 56316 59356 60918 61149 62348 62764 67507 68343 68799 70148 70414 72267 73644 76893 78698 79662 79781 80769 81532 85129 89034 91124 91732 92378 92868 93522 94146 96356 100607 102524 103246 105222 105621 107692 118047 121836 122298 131563 135014 136686 137598 138567 140828 144534 147041 153786 154869 157396 159324 159562 161538 170258 172601 178068 184756 187044 188292 192907 201214 202521 206492 210444 211242 236094 239343 244596 252263 255387 263126 264979 270028 273372 275196 277134 281941 289068 294082 296153 298129 301821 307572 309738 319124 323076 333203 340516 345202 385814 387277 394689 402428 405042 422484 432839 435727 441123 457691 472188 478686 504526 510774 511537 517803 526252 529958 554268 563882 578721 588164 592306 596258 603642 619476 666406 668933 690404 756789 771628 774554 789378 794937 810084 845823 865678 871454 877591 882246 888459 894387 915382 957372 999609 1009052 1021548 1023074 1035606 1059916 1106677 1127764 1157442 1161831 1184612 1192516 1207284 1298517 1307181 1332812 1337866 1373073 1447193 1513578 1534611 1549108 1578756 1589874 1617451 1691646 1710319 1731356 1742908 1755182 1764492 1776918 1788774 1830764 1911533 1999218 2006799 2046148 2071212 2213354 2314884 2323662 2499697 2597034 2614362 2632773 2675732 2746146 2793779 2894386 3027156 3069222 3179748 3234902 3279419 3320031 3383292 3420638 3510364 3553836 3577548 3665233 3823066 3998436 4013598 4341579 4426708 4647324 4792997 4852353 4999394 5034601 5130957 5194068 5228724 5265546 5492292 5587558 5626907 5664451 5734599 5788772 6138444 6469804 6558838 6640062 6841276 7330466 7358263 7499091 7646132 8027196 8381337 8683158 8696129 9585994 9704706 9838257 9998788 10069202 10261914 10531092 10995699 11175116 11253814 11328902 11469198 13117676 13280124 14378991 14660932 14716526 14998182 15103803 16762674 16880721 16993353 17366316 17392258 18813509 19171988 19409412 19676514 20138404 20523828 21026863 21991398 22074789 22507628 22657804 22938396 26088387 27496667 28757982 29433052 29996364 30207606 30731569 32496061 33525348 33761442 33986706 34784516 36319127 37627018 39353028 42053726 43982796 44149578 47494243 52176774 54993334 56440527 57515964 60415212 61463138 62308961 63080589 64992122 67522884 67973412 72638254 75254036 82490001 84107452 88299156 92194707 94988486 95657419 97488183 104353548 108957381 109986668 112881054 122926276 124617922 126161178 129984244 142482729 145276508 164980002 184389414 186926883 189976972 191314838 194976366 217914762 225762108 249235844 252322356 284965458 286972257 329960004 357456671 368778828 373853766 382629676 389952732 399510397 435829524 522436673 569930916 573944514 617425159 714913342 747707532 799020794 1044873346 1072370013 1147889028 1198531191 1234850318 1429826684 1567310019 1598041588 1852275477 2089746692 2144740026 2397062382 2469700636 3134620038 3704550954 4289480052 4794124764 6269240076 6791676749 7409101908 13583353498 20375030247 27166706996 40750060494 81500120988
- Sum of all divisors σ(n): 255499453440
- Sum of proper divisors (its aliquot sum) s(n): 173999332452
- 81500120988 is an abundant number, because the sum of its proper divisors (173999332452) is greater than itself. Its abundance is 92499211464
Bases of 81500120988
- Binary: 10010111110011100100100100111100111002
- Hexadecimal: 0x12F9C9279C
- Base-36: 11FV2FTO
Squares and roots of 81500120988
- 81500120988 squared (815001209882) is 6642269721058638096144
- 81500120988 cubed (815001209883) is 541345785901208016278241976270272
-
The
square root of 81500120988 is 285482.2603735651 -
The
cube root of 81500120988 is 4335.6353755803
Scales and comparisons
How big is 81500120988?- 81,500,120,988 seconds is equal to 2,591 years, 23 weeks, 3 days, 10 hours, 29 minutes, 48 seconds.
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To count from 1 to 81,500,120,988 would take you about five thousand, one hundred eighty-two 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 81500120988 cubic inches would be around 361.3 feet tall.
Recreational maths with 81500120988
- 81500120988 backwards is 88902100518
- The number of decimal digits it has is: 11
- The sum of 81500120988's digits is 42
- More coming soon!
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