81543121842816

Names of 81543121842816

• Cardinal: 81543121842816 can be written as Eighty-one trillion, five hundred forty-three billion, one hundred twenty-one million, eight hundred forty-two thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 8.1543121842816 × 10¹³

Factors of 81543121842816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 632

Divisors of 81543121842816

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 24 27 32 34 36 48 51 54 64 68 72 81 96 102 108 128 136 144 153 162 192 204 216 272 288 289 293 306 317 324 384 408 432 459 544 576 578 586 612 634 648 816 864 867 879 918 951 1088 1152 1156 1172 1224 1268 1296 1377 1632 1728 1734 1758 1836 1902 2176 2312 2344 2448 2536 2592 2601 2637 2754 2853 3264 3456 3468 3516 3672 3804 4624 4688 4896 4981 5072 5184 5202 5274 5389 5508 5706 6528 6936 7032 7344 7608 7803 7911 8559 9248 9376 9792 9962 10144 10368 10404 10548 10778 11016 11412 13872 14064 14688 14943 15216 15606 15822 16167 17118 18496 18752 19584 19924 20288 20808 21096 21556 22032 22824 23409 23733 25677 27744 28128 29376 29886 30432 31212 31644 32334 34236 36992 37504 39848 40576 41616 42192 43112 44064 44829 45648 46818 47466 48501 51354 55488 56256 58752 59772 60864 62424 63288 64668 68472 79696 83232 84384 84677 85849 86224 88128 89658 91296 91613 92881 93636 94932 97002 102708 110976 112512 119544 121728 124848 126576 129336 134487 136944 145503 159392 166464 168768 169354 171698 172448 176256 179316 182592 183226 185762 187272 189864 194004 205416 239088 249696 253152 254031 257547 258672 268974 273888 274839 278643 291006 318784 332928 337536 338708 343396 344896 358632 365184 366452 371524 374544 379728 388008 403461 410832 436509 478176 499392 506304 508062 515094 517344 537948 547776 549678 557286 582012 637568 677416 686792 689792 717264 732904 743048 749088 759456 762093 772641 776016 806922 821664 824517 835929 873018 956352 998784 1012608 1016124 1030188 1034688 1075896 1095552 1099356 1114572 1164024 1354832 1373584 1434528 1459433 1465808 1486096 1498176 1518912 1524186 1545282 1552032 1578977 1613844 1643328 1649034 1671858 1746036 1912704 2032248 2060376 2069376 2151792 2198712 2229144 2286279 2317923 2328048 2473551 2507787 2709664 2747168 2869056 2918866 2931616 2972192 2996352 3037824 3048372 3090564 3104064 3157954 3227688 3286656 3298068 3343716 3492072 4064496 4120752 4303584 4378299 4397424 4458288 4572558 4635846 4656096 4736931 4947102 5015574 5419328 5494336 5738112 5837732 5863232 5944384 6096744 6181128 6208128 6315908 6455376 6596136 6687432 6858837 6953769 6984144 7420653 7523361 8128992 8241504 8607168 8756598 8794848 8916576 9145116 9271692 9312192 9473862 9894204 10031148 10838656 10988672 11675464 11726464 11888768 12193488 12362256 12631816 12910752 13134897 13192272 13374864 13717674 13907538 13968288 14210793 14841306 15046722 16257984 16483008 17214336 17513196 17589696 17833152 18290232 18543384 18624384 18947724 19788408 20062296 23350928 24386976 24724512 24810361 25263632 25821504 26269794 26384544 26749728 26842609 27214133 27435348 27815076 27936576 28421586 29682612 30093444 32515968 32966016 35026392 35179392 35666304 36580464 37086768 37895448 39404691 39576816 40124592 42632379 46701856 48773952 49449024 49620722 50527264 51643008 52539588 52769088 53499456 53685218 54428266 54870696 55630152 55873152 56843172 59365224 60186888 70052784 73160928 74173536 74431083 75790896 78809382 79153632 80249184 80527827 81642399 85264758 93403712 97547904 98898048 99241444 101054528 105079176 105538176 106998912 107370436 108856532 109741392 111260304 113686344 118214073 118730448 120373776 127897137 140105568 146321856 148347072 148862166 151581792 157618764 158307264 160498368 161055654 163284798 170529516 186807424 198482888 202109056 210158352 214740872 217713064 219482784 222520608 223293249 227372688 236428146 237460896 240747552 241583481 244927197 255794274 280211136 292643712 296694144 297724332 303163584 315237528 316614528 320996736 322111308 326569596 341059032 396965776 420316704 429481744 435426128 438965568 445041216 446586498 454745376 462640261 472856292 474921792 481495104 483166962 489854394 511588548 560422272 595448664 606327168 630475056 644222616 653139192 669879747 682118064 724750443 734781591 793931552 840633408 858963488 870852256 877931136 890082432 893172996 909490752 925280522 945712584 949843584 962990208 966333924 979708788 1023177096 1190897328 1260950112 1288445232 1306278384 1339759494 1364236128 1387920783 1449500886 1469563182 1587863104 1681266816 1717926976 1741704512 1786345992 1818981504 1850561044 1891425168 1932667848 1959417576 2009639241 2046354192 2174251329 2204344773 2381794656 2521900224 2576890464 2612556768 2679518988 2728472256 2775841566 2899001772 2939126364 3175726208 3435853952 3483409024 3572691984 3701122088 3782850336 3865335696 3918835152 4019278482 4092708384 4163762349 4348502658 4408689546 4763589312 5043800448 5153780928 5225113536 5359037976 5456944512 5551683132 5798003544 5878252728 7145383968 7402244176 7565700672 7730671392 7837670304 7864884437 8038556964 8185416768 8327524698 8697005316 8817379092 9527178624 10307561856 10450227072 10718075952 11103366264 11596007088 11756505456 12491287047 14290767936 14804488352 15131401344 15461342784 15675340608 15729768874 16077113928 16370833536 16655049396 17394010632 17634758184 21436151904 22206732528 23192014176 23513010912 23594653311 24982574094 28581535872 29608976704 30922685568 31350681216 31459537748 32154227856 33310098792 34788021264 35269516368 37473861141 42872303808 44413465056 46384028352 47026021824 47189306622 49965148188 59217953408 62919075496 64308455712 66620197584 69576042528 70539032736 70783959933 74947722282 85744607616 88826930112 92768056704 94052043648 94378613244 99930296376 125838150992 128616911424 133240395168 139152085056 141078065472 141567919866 149895444564 177653860224 188757226488 199860592752 212351879799 251676301984 257233822848 266480790336 278304170112 282156130944 283135839732 299790889128 377514452976 399721185504 424703759598 503352603968 532961580672 566271679464 599581778256 637055639397 755028905952 799442371008 849407519196 1006705207936 1132543358928 1199163556512 1274111278794 1510057811904 1598884742016 1698815038392 2265086717856 2398327113024 2548222557588 3020115623808 3397630076784 4530173435712 4796654226048 5096445115176 6795260153568 9060346871424 10192890230352 13590520307136 20385780460704 27181040614272 40771560921408 81543121842816
• Sum of all divisors σ(n): 259484271562890
• Sum of proper divisors (its aliquot sum) s(n): 177941149720074
• 81543121842816 is an abundant number, because the sum of its proper divisors (177941149720074) is greater than itself. Its abundance is 96398027877258

Bases of 81543121842816

• Binary: 10010100010100110111100110011111011001010000000₂
• Hexadecimal: 0x4A29BCCFB280
• Base-36: SWKE5D400

Squares and roots of 81543121842816

• 81543121842816 squared (81543121842816²) is 6649280719872335847810809856
• 81543121842816 cubed (81543121842816³) is 542203107907637165790597063104316095594496
• The square root of 81543121842816 is 9030123.0247885329
• The cube root of 81543121842816 is 43363.9775992093

Scales and comparisons

• 81,543,121,842,816 seconds is equal to 2,592,819 years, 2 weeks, 2 days, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 81,543,121,842,816 would take you about six million, four hundred eighty-two thousand and forty-seven 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 81543121842816 cubic inches would be around 3613.7 feet tall.

Recreational maths with 81543121842816

• 81543121842816 backwards is 61824812134518
• 81543121842816 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81543121842816's digits is 54
• More coming soon!