81373579040
81,373,579,040 is an even composite number composed of six prime numbers multiplied together.
81373579040 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of four hundred thirty-two divisors.
Prime factorization of 81373579040:
25 × 5 × 13 × 17 × 372 × 412
(2 × 2 × 2 × 2 × 2 × 5 × 13 × 17 × 37 × 37 × 41 × 41)See below for interesting mathematical facts about the number 81373579040 from the Numbermatics database.
Names of 81373579040
- Cardinal: 81373579040 can be written as Eighty-one billion, three hundred seventy-three million, five hundred seventy-nine thousand and forty.
Scientific notation
- Scientific notation: 8.137357904 × 1010
Factors of 81373579040
Divisors of 81373579040
- Number of divisors d(n): 432
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Complete list of divisors:
1 2 4 5 8 10 13 16 17 20 26 32 34 37 40 41 52 65 68 74 80 82 85 104 130 136 148 160 164 170 185 205 208 221 260 272 296 328 340 370 410 416 442 481 520 533 544 592 629 656 680 697 740 820 884 962 1040 1066 1105 1184 1258 1312 1360 1369 1394 1480 1517 1640 1681 1768 1924 2080 2132 2210 2405 2516 2665 2720 2738 2788 2960 3034 3145 3280 3362 3485 3536 3848 4264 4420 4810 5032 5330 5476 5576 5920 6068 6290 6560 6724 6845 6970 7072 7585 7696 8177 8405 8528 8840 9061 9620 10064 10660 10952 11152 12136 12580 13448 13690 13940 15170 15392 16354 16810 17056 17680 17797 18122 19240 19721 20128 21320 21853 21904 22304 23273 24272 25160 25789 26896 27380 27880 28577 30340 32708 33620 35360 35594 36244 38480 39442 40885 42640 43706 43808 45305 46546 48544 50320 51578 53792 54760 55760 56129 57154 60680 62197 65416 67240 71188 72488 76960 78884 81770 85280 87412 88985 90610 93092 98605 100640 103156 109265 109520 111520 112258 114308 116365 121360 124394 128945 130832 134480 142376 142885 144976 157768 163540 174824 177970 181220 186184 197210 206312 218530 219040 224516 228616 232730 242720 248788 257890 261664 268960 280645 284752 285770 289952 302549 310985 315536 327080 335257 349648 355940 362440 371501 372368 394420 412624 437060 449032 457232 465460 497576 515780 561290 569504 571540 605098 621970 631072 654160 670514 699296 711880 724880 729677 743002 744736 788840 808561 825248 874120 898064 914464 930920 954193 995152 1031560 1057349 1122580 1143080 1210196 1243940 1308320 1341028 1423760 1449760 1459354 1486004 1512745 1577680 1617122 1676285 1748240 1796128 1857505 1861840 1908386 1990304 2063120 2114698 2245160 2286160 2301289 2420392 2487880 2682056 2847520 2918708 2972008 3025490 3155360 3234244 3352570 3496480 3648385 3715010 3723680 3816772 4042805 4126240 4229396 4490320 4572320 4602578 4770965 4840784 4975760 5286745 5364112 5837416 5944016 6050980 6468488 6705140 7296770 7430020 7633544 8085610 8458792 8980640 9205156 9541930 9681568 9951520 10573490 10728224 11506445 11674832 11888032 12101960 12404509 12936976 13410280 13745537 14593540 14860040 15267088 16171220 16917584 18410312 19083860 21146980 23012890 23349664 24203920 24809018 25873952 26820560 27491074 29187080 29720080 29916757 30534176 32342440 33835168 36820624 38167720 39121913 42293960 46025780 48407840 49618036 53641120 54982148 58374160 59440160 59833514 62022545 64684880 68727685 73641248 76335440 78243826 84587920 92051560 99236072 109964296 116748320 119667028 124045090 129369760 137455370 149583785 152670880 156487652 169175840 184103120 195609565 198472144 219928592 239334056 248090180 274910740 299167570 312975304 368206240 391219130 396944288 439857184 478668112 496180360 508584869 549821480 598335140 625950608 782438260 957336224 992360720 1017169738 1099642960 1196670280 1251901216 1564876520 1984721440 2034339476 2199285920 2393340560 2542924345 3129753040 4068678952 4786681120 5085848690 6259506080 8137357904 10171697380 16274715808 20343394760 40686789520 81373579040
- Sum of all divisors σ(n): 230925405816
- Sum of proper divisors (its aliquot sum) s(n): 149551826776
- 81373579040 is an abundant number, because the sum of its proper divisors (149551826776) is greater than itself. Its abundance is 68178247736
Bases of 81373579040
- Binary: 10010111100100011111001000111001000002
- Hexadecimal: 0x12F23E4720
- Base-36: 11DRQ7FK
Squares and roots of 81373579040
- 81373579040 squared (813735790402) is 6621659365779127321600
- 81373579040 cubed (813735790403) is 538828121777184088286441099264000
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The
square root of 81373579040 is 285260.5458874395 -
The
cube root of 81373579040 is 4333.3902912171
Scales and comparisons
How big is 81373579040?- 81,373,579,040 seconds is equal to 2,587 years, 22 weeks, 1 day, 19 hours, 57 minutes, 20 seconds.
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To count from 1 to 81,373,579,040 would take you about five thousand, one hundred seventy-four 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 81373579040 cubic inches would be around 361.1 feet tall.
Recreational maths with 81373579040
- 81373579040 backwards is 04097537318
- The number of decimal digits it has is: 11
- The sum of 81373579040's digits is 47
- More coming soon!
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