81429335314922749

Names of 81429335314922749

• Cardinal: 81429335314922749 can be written as Eighty-one quadrillion, four hundred twenty-nine trillion, three hundred thirty-five billion, three hundred fourteen million, nine hundred twenty-two thousand, seven hundred forty-nine.

Scientific notation

• Scientific notation: 8.1429335314922749 × 10¹⁶

Factors of 81429335314922749

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 187

Divisors of 81429335314922749

• Number of divisors d(n): 448
• Complete list of divisors:
  1 7 11 29 49 61 77 79 121 203 319 343 427 539 553 671 847 869 1331 1421 1769 2233 2291 2401 2989 3509 3721 3773 3871 4697 4819 5929 6083 7381 9317 9559 9947 12383 15631 16037 16807 19459 20923 24563 25201 26047 26411 27097 32879 33733 38599 40931 41503 42581 51667 53009 65219 66913 69629 81191 86681 105149 107909 109417 112259 117649 136213 139751 146461 171941 176407 182329 184877 189679 214049 226981 230153 236131 270193 277211 286517 290521 293959 298067 361669 371063 450241 456533 468391 487403 568337 583099 606767 736043 755363 765919 785813 953491 978257 1025227 1186999 1203587 1234849 1276303 1294139 1327753 1498343 1537261 1588867 1611071 1652917 1891351 1940477 2005619 2033647 2057713 2086469 2354539 2496791 2531683 2597441 3049321 3151687 3195731 3233549 3278737 3411821 3978359 4081693 4247369 4952651 5152301 5287541 5361433 5500691 6414089 6582449 6674437 6847799 7176589 8308993 8425109 8524811 8643943 8934121 9294271 10488401 10760827 11122069 11277497 11570419 13056989 13239457 13583339 14039333 14235529 14403991 14605283 16481773 16909871 17477537 17721781 17931499 18182087 21345247 22061809 22370117 22634843 22951159 27464701 27848513 28571851 29731583 34668557 35569039 36066107 37012787 37530031 38504837 44898623 46077143 46721059 47934593 58162951 58975763 59673677 60507601 62538847 72406939 73418807 75325789 77854483 78942479 80992933 91398923 92676199 93772921 95083373 98275331 100827937 102236981 115372411 118369097 122342759 124052467 125520493 127274609 143626879 149416729 154432663 156590819 158443901 160658113 186008581 192252907 194939591 197246489 200002957 208121081 242679899 248983273 252462749 259089509 269533859 302111711 314290361 322540001 327047413 335542151 391259429 407140657 412830341 417715739 423553207 437771929 506848573 513931649 520013471 527280523 544981381 566950531 639792461 648733393 656410447 665583611 687927317 705795559 796476329 807606877 828583679 856399313 868367269 878643451 890922263 1005388153 1031502131 1045917103 1081028641 1109107307 1124606791 1302060067 1345770349 1364577137 1380725423 1400020699 1698759293 1742882911 1767239243 1813626563 2114781977 2169711379 2200032527 2257780007 2289331891 2348795057 2738816003 2849984599 2924010173 2964872449 3547940011 3597521543 3640094297 3690963661 3814869667 4478547227 4541133751 4594873129 4659085277 4815491219 4940568913 5575334303 5653248139 5720148181 5800085753 5994795191 6150504157 6236455841 7037717071 7220514917 7321419721 7567200487 7763751149 8761239619 9114420469 9420392443 9552039959 9665077961 9800144893 11346523441 11891315051 12200180377 12370674701 12695385941 14803473839 15187979653 15400227689 15804460049 16441565399 19171712021 19949892193 20468071211 23866825169 24835580077 25182650801 25480660079 25836745627 26704087669 31349830589 32164111903 32613596939 34583982391 39027340121 39572736973 40041037267 40600600271 41963566337 43053529099 49264019497 50543604419 51249938047 52970403409 54346258043 61328677333 62921629991 63800943283 65942747101 67655545727 68601014251 79425664087 83239205357 85401262639 103624316873 106315857571 107801593823 110631220343 134201984147 139649245351 143276498477 167067776183 173849060539 178364620553 180857219389 219448814123 225148783321 273191380847 277009158811 280287260869 284204201897 293744964359 301374703693 344848136479 353805230933 358749566329 380423806301 429300741331 440451409937 446606602981 461599229707 473588820089 555979648609 582674437499 597808838473 692137929901 725370218111 744211002997 754611156761 774418542401 939413889029 1002935489339 1169474433281 1216943423773 1248552343871 1536141698861 1576041483247 1912339665929 1962010826083 1989429413279 2109622925851 2413936955353 2476636616531 3005105189317 3083159869559 3126246220867 3231194607949 3315121740623 3891857540263 4184661869311 4844965509307 5077591526777 5209477020979 6575897223203 8186321032967 8518603966411 8739866407097 11032290382729 13386377661503 13734075782581 16897558687471 17336456315717 21035736325219 21582119086913 21883723546069 23205852184361 27243002781841 33914758565149 35543140687439 36466339146853 46031280562421 57304247230769 61179064849679 93704643630521 96138530478067 121355194210019 147250154276533 151074833608391 190701019472887 237403309956043 255264374027971 401129730615383 672969713346469 1030751079935731 1057523835258737 1334907136310209 1661823169692301 2807908114307681 7402666846811159 11632762187846107 81429335314922749
• Sum of all divisors σ(n): 111289676269132800
• Sum of proper divisors (its aliquot sum) s(n): 29860340954210051
• 81429335314922749 is a deficient number, because the sum of its proper divisors (29860340954210051) is less than itself. Its deficiency is 51568994360712698

Bases of 81429335314922749

• Binary: 100100001010010111000110010001101101111011111110011111101₂
• Hexadecimal: 0x1214B8C8DBDFCFD
• Base-36: M9SAG7VDCSD

Squares and roots of 81429335314922749

• 81429335314922749 squared (81429335314922749²) is 6630736649830125154060167837717001
• 81429335314922749 cubed (81429335314922749³) is 539936478043964767921445413544359876479558838955749
• The square root of 81429335314922749 is 285358257.8355193649
• The cube root of 81429335314922749 is 433437.9795593523

Scales and comparisons

• 81,429,335,314,922,749 seconds is equal to 2,589,200,985 years, 28 weeks, 1 day, 12 hours, 45 minutes, 49 seconds.
• To count from 1 to 81,429,335,314,922,749 would take you about seven billion, seven hundred sixty-seven million, six hundred two thousand, nine hundred fifty-six 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 81429335314922749 cubic inches would be around 36119.8 feet tall.

Recreational maths with 81429335314922749

• 81429335314922749 backwards is 94722941353392418
• The number of decimal digits it has is: 17
• The sum of 81429335314922749's digits is 76
• More coming soon!