81389137984
81,389,137,984 is an even composite number composed of six prime numbers multiplied together.
81389137984 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of six hundred seventy-two divisors.
Prime factorization of 81389137984:
26 × 72 × 113 × 17 × 31 × 37
(2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 11 × 11 × 11 × 17 × 31 × 37)See below for interesting mathematical facts about the number 81389137984 from the Numbermatics database.
Names of 81389137984
- Cardinal: 81389137984 can be written as Eighty-one billion, three hundred eighty-nine million, one hundred thirty-seven thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 8.1389137984 × 1010
Factors of 81389137984
Divisors of 81389137984
- Number of divisors d(n): 672
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Complete list of divisors:
1 2 4 7 8 11 14 16 17 22 28 31 32 34 37 44 49 56 62 64 68 74 77 88 98 112 119 121 124 136 148 154 176 187 196 217 224 238 242 248 259 272 296 308 341 352 374 392 407 434 448 476 484 496 518 527 539 544 592 616 629 682 704 748 784 814 833 847 868 952 968 992 1036 1054 1078 1088 1147 1184 1232 1258 1309 1331 1364 1496 1519 1568 1628 1666 1694 1736 1813 1904 1936 1984 2057 2072 2108 2156 2294 2368 2387 2464 2516 2618 2662 2728 2849 2992 3038 3136 3256 3332 3388 3472 3626 3689 3751 3808 3872 4114 4144 4216 4312 4403 4477 4588 4774 4928 5032 5236 5324 5456 5698 5797 5929 5984 6076 6512 6664 6776 6919 6944 7252 7378 7502 7616 7744 8029 8228 8288 8432 8624 8806 8954 9163 9176 9317 9548 10064 10472 10648 10912 11396 11594 11858 11968 12152 12617 13024 13328 13552 13838 13888 14399 14504 14756 15004 16058 16456 16576 16709 16864 17248 17612 17908 18326 18352 18634 19096 19499 19943 20128 20944 21296 21824 22627 22792 23188 23716 24304 25234 25823 26048 26257 26656 27104 27676 28798 29008 29512 30008 30821 31339 32116 32912 33418 33728 34496 35224 35816 36652 36704 37268 38192 38998 39886 40256 40579 41261 41888 42592 45254 45584 46376 47432 48433 48608 49247 50468 51646 52514 53312 54208 55352 56203 57596 58016 59024 60016 61642 62678 63767 64232 65219 65824 66836 70448 71632 73304 73408 74536 76109 76384 77996 79772 81158 82522 83776 85184 88319 90508 91168 92752 94864 96866 97216 98494 100793 100936 103292 105028 110704 112406 115192 116032 118048 120032 123284 125356 127534 128464 130438 131648 133672 136493 138787 140896 143264 146608 149072 152218 152768 155992 158389 159544 162316 165044 176638 181016 182336 183799 185504 189728 193732 196988 201586 201872 206584 210056 214489 219373 221408 224812 230384 236096 240064 246568 250712 255068 256928 260876 267344 272986 277574 281792 284053 286528 288827 293216 298144 304436 311984 316778 319088 324632 330088 339031 344729 353276 362032 367598 371008 379456 387464 393976 403172 403744 413168 420112 428978 438746 442816 446369 449624 460768 493136 501424 510136 513856 521752 532763 534688 545972 555148 568106 577654 586432 596288 608872 618233 623968 633556 638176 649264 660176 678062 689458 701437 706552 724064 735196 774928 787952 806344 807488 826336 837199 840224 857956 877492 892738 899248 921536 955451 971509 986272 1002848 1020272 1043504 1065526 1069376 1091944 1108723 1110296 1136212 1155308 1217744 1236466 1247936 1267112 1276352 1298528 1320352 1356124 1378916 1402874 1413104 1448128 1470392 1501423 1526657 1549856 1575904 1612688 1652672 1674398 1680448 1715912 1754984 1785476 1798496 1910902 1943018 1972544 2005696 2021789 2040544 2087008 2131052 2183888 2217446 2220592 2272424 2310616 2359379 2413103 2435488 2472932 2534224 2597056 2640704 2712248 2757832 2805748 2826208 2940784 3002846 3053314 3099712 3124583 3151808 3225376 3348796 3431824 3509968 3570952 3596992 3729341 3821804 3886036 4043578 4081088 4174016 4262104 4367776 4434892 4441184 4544848 4621232 4718758 4826206 4870976 4910059 4945864 5068448 5424496 5515664 5611496 5652416 5860393 5881568 6005692 6106628 6249166 6450752 6697592 6800563 6863648 7019936 7141904 7458682 7643608 7772072 8087156 8524208 8735552 8869784 8882368 9089696 9242464 9437516 9652412 9820118 9891728 10136896 10509961 10686599 10848992 11031328 11222992 11720786 11763136 12011384 12213256 12498332 13395184 13601126 13727296 14039872 14283808 14917364 15287216 15544144 16174312 16515653 17048416 17739568 18179392 18484928 18875032 19304824 19640236 19783456 21019922 21373198 21697984 22062656 22445984 23441572 24022768 24426512 24996664 25953169 26790368 27202252 28567616 29834728 30574432 31088288 32348624 33031306 34096832 34370413 35479136 37750064 38609648 39280472 39566912 41022751 42039844 42746396 44891968 46883144 48045536 48853024 49993328 51906338 53580736 54404504 59669456 61148864 62176576 64697248 66062612 68740826 70958272 74806193 75500128 77219296 78560944 82045502 84079688 85492792 93766288 96091072 97706048 99986656 103812676 108809008 115609571 119338912 129394496 132125224 137481652 149612386 151000256 154438592 157121888 164091004 168159376 170985584 181672183 187532576 199973312 207625352 217618016 231219142 238677824 264250448 274963304 299224772 314243776 328182008 336318752 341971168 363344366 375065152 415250704 435236032 462438284 528500896 549926608 598449544 656364016 672637504 683942336 726688732 830501408 924876568 1057001792 1099853216 1196899088 1271705281 1312728032 1453377464 1661002816 1849753136 2199706432 2393798176 2543410562 2625456064 2906754928 3699506272 4787596352 5086821124 5813509856 7399012544 10173642248 11627019712 20347284496 40694568992 81389137984
- Sum of all divisors σ(n): 231966747648
- Sum of proper divisors (its aliquot sum) s(n): 150577609664
- 81389137984 is an abundant number, because the sum of its proper divisors (150577609664) is greater than itself. Its abundance is 69188471680
Bases of 81389137984
- Binary: 10010111100110010101110110000010000002
- Hexadecimal: 0x12F32BB040
- Base-36: 11E0ZOSG
Squares and roots of 81389137984
- 81389137984 squared (813891379842) is 6624191781778591584256
- 81389137984 cubed (813891379843) is 539137258959656607388192745979904
-
The
square root of 81389137984 is 285287.8160454807 -
The
cube root of 81389137984 is 4333.6664606281
Scales and comparisons
How big is 81389137984?- 81,389,137,984 seconds is equal to 2,587 years, 47 weeks, 6 days, 21 hours, 53 minutes, 4 seconds.
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To count from 1 to 81,389,137,984 would take you about five thousand, one hundred seventy-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 81389137984 cubic inches would be around 361.1 feet tall.
Recreational maths with 81389137984
- 81389137984 backwards is 48973198318
- The number of decimal digits it has is: 11
- The sum of 81389137984's digits is 61
- More coming soon!
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The information we have on file for 81389137984 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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