81729144546816
81,729,144,546,816 is an even composite number composed of seven prime numbers multiplied together.
81729144546816 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of six hundred forty divisors.
Prime factorization of 81729144546816:
29 × 3 × 13 × 17 × 53 × 79 × 57503
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 13 × 17 × 53 × 79 × 57503)See below for interesting mathematical facts about the number 81729144546816 from the Numbermatics database.
Names of 81729144546816
- Cardinal: 81729144546816 can be written as Eighty-one trillion, seven hundred twenty-nine billion, one hundred forty-four million, five hundred forty-six thousand, eight hundred sixteen.
Scientific notation
- Scientific notation: 8.1729144546816 × 1013
Factors of 81729144546816
Divisors of 81729144546816
- Number of divisors d(n): 640
-
Complete list of divisors:
1 2 3 4 6 8 12 13 16 17 24 26 32 34 39 48 51 52 53 64 68 78 79 96 102 104 106 128 136 156 158 159 192 204 208 212 221 237 256 272 312 316 318 384 408 416 424 442 474 512 544 624 632 636 663 689 768 816 832 848 884 901 948 1027 1088 1248 1264 1272 1326 1343 1378 1536 1632 1664 1696 1768 1802 1896 2054 2067 2176 2496 2528 2544 2652 2686 2703 2756 3081 3264 3328 3392 3536 3604 3792 4029 4108 4134 4187 4352 4992 5056 5088 5304 5372 5406 5512 6162 6528 6656 6784 7072 7208 7584 8058 8216 8268 8374 8704 9984 10112 10176 10608 10744 10812 11024 11713 12324 12561 13056 13568 14144 14416 15168 16116 16432 16536 16748 17459 19968 20224 20352 21216 21488 21624 22048 23426 24648 25122 26112 27136 28288 28832 30336 32232 32864 33072 33496 34918 35139 40448 40704 42432 42976 43248 44096 46852 49296 50244 52377 54431 56576 57503 57664 60672 64464 65728 66144 66992 69836 70278 71179 81408 84864 85952 86496 88192 93704 98592 100488 104754 108862 113152 115006 115328 121344 128928 131456 132288 133984 139672 140556 142358 163293 169728 171904 172509 172992 176384 187408 197184 200976 209508 213537 217724 230012 230656 257856 262912 264576 267968 279344 281112 284716 326586 339456 343808 345018 345984 352768 374816 394368 401952 419016 427074 435448 460024 461312 515712 525824 529152 535936 558688 562224 569432 653172 687616 690036 691968 747539 749632 788736 803904 838032 854148 870896 920048 925327 977551 1031424 1058304 1071872 1117376 1124448 1138864 1306344 1380072 1383936 1495078 1499264 1577472 1607808 1676064 1708296 1741792 1840096 1850654 1955102 2062848 2143744 2234752 2242617 2248896 2277728 2612688 2760144 2775981 2932653 2990156 2998528 3047659 3215616 3352128 3416592 3483584 3680192 3701308 3910204 4469504 4485234 4497792 4542737 4555456 5225376 5520288 5551962 5865306 5980312 5997056 6095318 6431232 6704256 6833184 6967168 7360384 7402616 7820408 8939008 8970468 8995584 9085474 9110912 9142977 10450752 11040576 11103924 11730612 11960624 12190636 12708163 13408512 13628211 13666368 13934336 14720768 14805232 15640816 17940936 17991168 18170948 18221824 18285954 20901504 22081152 22207848 23461224 23921248 24381272 25416326 26817024 27256422 27332736 27868672 29441536 29610464 31281632 35881872 36341896 36443648 36571908 38124489 39619567 41803008 44162304 44415696 46922448 47842496 48762544 50832652 51810203 54512844 54665472 59055581 59220928 62563264 71763744 72683792 73143816 76248978 77226529 79239134 83606016 88324608 88831392 93844896 95684992 97525088 101665304 103620406 109025688 109330944 118111162 118441856 118858701 125126528 143527488 145367584 146287632 152497956 154453058 155430609 158478268 177166743 177662784 187689792 191369984 195050176 203330608 207240812 218051376 231679587 236222324 236883712 237717402 240765061 250253056 287054976 290735168 292575264 304995912 308906116 310861218 316956536 354333486 355325568 375379584 382739968 390100352 406661216 414481624 436102752 463359174 472444648 473767424 475434804 481530122 500506112 574109952 581470336 585150528 609991824 617812232 621722436 633913072 673532639 708666972 710651136 722295183 750759168 780200704 813322432 828963248 872205504 926718348 944889296 950869608 963060244 1003944877 1148219904 1162940672 1170301056 1219983648 1235624464 1243444872 1267826144 1347065278 1417333944 1421302272 1444590366 1501518336 1560401408 1626644864 1657926496 1744411008 1853436696 1889778592 1901739216 1926120488 2007889754 2020597917 2325881344 2340602112 2439967296 2471248928 2486889744 2535652288 2694130556 2834667888 2889180732 3011834631 3129945793 3253289728 3315852992 3488822016 3706873392 3779557184 3803478432 3852240976 4015779508 4041195834 4093006037 4681204224 4879934592 4942497856 4973779488 5071304576 5388261112 5669335776 5778361464 6023669262 6259891586 6506579456 6631705984 6977644032 7413746784 7559114368 7606956864 7704481952 8031559016 8082391668 8186012074 9389837379 9759869184 9884995712 9947558976 10142609152 10776522224 11338671552 11556722928 12047338524 12279018111 12519783172 13263411968 14827493568 15118228736 15213913728 15408963904 16063118032 16164783336 16372024148 18779674758 19519738368 19769991424 19895117952 20285218304 21553044448 22677343104 23113445856 24094677048 24558036222 25039566344 26526823936 29654987136 30236457472 30427827456 30817927808 32126236064 32329566672 32744048296 37559349516 39539982848 39790235904 43106088896 45354686208 46226891712 48189354096 49116072444 50079132688 53209078481 59309974272 60855654912 61635855616 64252472128 64659133344 65488096592 75118699032 79580471808 86212177792 90709372416 92453783424 96378708192 98232144888 100158265376 106418156962 118619948544 123271711232 128504944256 129318266688 130976193184 150237398064 159627235443 172424355584 184907566848 192757416384 196464289776 200316530752 212836313924 257009888512 258636533376 261952386368 300474796128 319254470886 344848711168 369815133696 385514832768 392928579552 400633061504 425672627848 514019777024 517273066752 523904772736 600949592256 638508941772 771029665536 785857159104 801266123008 851345255696 1034546133504 1047809545472 1201899184512 1277017883544 1542059331072 1571714318208 1602532246016 1702690511392 2095619090944 2403798369024 2554035767088 3143428636416 3405381022784 4807596738048 5108071534176 6286857272832 6810762045568 10216143068352 13621524091136 20432286136704 27243048182272 40864572273408 81729144546816
- Sum of all divisors σ(n): 256163924459520
- Sum of proper divisors (its aliquot sum) s(n): 174434779912704
- 81729144546816 is an abundant number, because the sum of its proper divisors (174434779912704) is greater than itself. Its abundance is 92705635365888
Bases of 81729144546816
- Binary: 100101001010101000011001010000011100110000000002
- Hexadecimal: 0x4A550CA0E600
- Base-36: SYXUMH91C
Squares and roots of 81729144546816
- 81729144546816 squared (817291445468162) is 6679653068354343510015737856
- 81729144546816 cubed (817291445468163) is 545922331146115155980790382272040975466496
-
The
square root of 81729144546816 is 9040417.2772508681 -
The
cube root of 81729144546816 is 43396.9276826629
Scales and comparisons
How big is 81729144546816?- 81,729,144,546,816 seconds is equal to 2,598,733 years, 51 weeks, 3 days, 23 hours, 53 minutes, 36 seconds.
-
To count from 1 to 81,729,144,546,816 would take you about six million, four hundred ninety-six thousand, eight hundred thirty-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 81729144546816 cubic inches would be around 3616.4 feet tall.
Recreational maths with 81729144546816
- 81729144546816 backwards is 61864544192718
- The number of decimal digits it has is: 14
- The sum of 81729144546816's digits is 66
- More coming soon!
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The information we have on file for 81729144546816 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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