81691827689736

Names of 81691827689736

• Cardinal: 81691827689736 can be written as Eighty-one trillion, six hundred ninety-one billion, eight hundred twenty-seven million, six hundred eighty-nine thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 8.1691827689736 × 10¹³

Factors of 81691827689736

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 17457

Divisors of 81691827689736

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 17 18 22 24 27 31 33 34 36 44 51 54 62 66 68 72 88 93 99 102 108 121 124 132 136 153 186 187 198 204 216 242 248 264 279 297 306 341 363 372 374 396 408 459 484 527 558 561 594 612 682 726 744 748 792 837 918 961 968 1023 1054 1089 1116 1122 1188 1224 1331 1364 1452 1496 1581 1674 1683 1836 1922 2046 2057 2108 2178 2232 2244 2376 2662 2728 2883 2904 3069 3162 3267 3348 3366 3672 3751 3844 3993 4092 4114 4216 4356 4488 4743 5049 5324 5766 5797 6138 6171 6324 6534 6696 6732 7502 7688 7986 8184 8228 8649 8712 9207 9486 10098 10571 10648 11253 11532 11594 11979 12276 12342 12648 13068 13464 14229 15004 15972 16337 16456 17298 17391 17393 18414 18513 18972 20196 21142 22506 22627 23064 23188 23958 24552 24684 25947 26136 28458 30008 31713 31944 32674 33759 34596 34782 34786 35937 36828 37026 37944 40392 41261 42284 45012 45254 46376 47916 49011 49368 51894 52173 52179 55539 56916 63426 63767 65348 67518 67881 69192 69564 69572 71874 73656 74052 82522 84568 90024 90508 95139 95832 98022 101277 103788 104346 104358 111078 113832 116281 123783 126852 127534 130696 135036 135762 139128 139144 143748 147033 148104 156519 156537 165044 179707 181016 190278 191301 191323 196044 202554 203643 207576 208692 208716 222156 232562 247566 253704 255068 270072 271524 285417 287496 294066 295681 313038 313074 330088 348843 359414 371349 380556 382602 382646 392088 405108 407286 417384 417432 441099 444312 465124 469611 495132 510136 539121 539183 543048 570834 573903 573969 588132 591362 610929 626076 626148 697686 701437 718828 742698 761112 765204 765292 810216 814572 882198 887043 930248 939222 990264 1046529 1078242 1078366 1114047 1141668 1147806 1147938 1176264 1182724 1221858 1252152 1252296 1279091 1395372 1402874 1437656 1485396 1530408 1530584 1617363 1617549 1629144 1721709 1721907 1764396 1774086 1878444 1976777 2093058 2104311 2104553 2156484 2156732 2228094 2283336 2295612 2295876 2365448 2443716 2558182 2661129 2790744 2805748 2970792 3139587 3234726 3235098 3252491 3443418 3443814 3528792 3548172 3756888 3837273 3953554 4186116 4208622 4209106 4312968 4313464 4456188 4591224 4591752 4852089 4852647 4887432 5116364 5165721 5322258 5611496 5930331 5931013 6279174 6312933 6313659 6469452 6470196 6504982 6886836 6887628 7096344 7674546 7907108 7983387 8372232 8417244 8418212 8912376 9166111 9704178 9705294 9757473 10232728 10331442 10644516 11511819 11860662 11862026 12558348 12625866 12627318 12938904 12940392 13009964 13773672 13775256 14557941 15349092 15814216 15966774 16714673 16834488 16836424 17790993 17793039 18332222 18938799 18940977 19408356 19410588 19514946 20662884 21289032 21744547 23023638 23150083 23721324 23724052 25116696 25251732 25254636 26019928 27498333 29115882 29272419 30698184 31933548 33429346 34535457 35581986 35586078 35777401 36664444 37877598 37881954 38816712 38821176 39029892 41325768 43489094 46047276 46300166 47442648 47448104 50144019 50503464 50509272 53372979 53379117 54996666 56822931 58231764 58544838 63867096 65233641 65241143 66858692 69070914 69450249 71163972 71172156 71554802 73328888 75755196 75763908 78059784 82494999 86978188 87817257 92094552 92600332 100288038 100827221 106745958 106758234 107332203 109993332 113645862 116463528 117089676 130467282 130482286 133717384 138141828 138900498 142327944 142344312 143109604 150432057 151510392 151527816 160137351 164989998 173956376 175634514 183861403 185200664 195700923 195723429 200576076 201654442 208350747 213491916 213516468 214664406 219986664 227291724 234179352 247484997 260934564 260964572 276283656 277800996 284149441 286219208 300864114 302481663 320274702 321996609 329979996 351269028 367722806 391401846 391446858 393551411 401152152 403308884 416701494 426983832 427032936 429328812 451296171 454583448 494969994 521869128 521929144 551584209 555601992 568298882 587102769 587170287 601728228 604963326 625052241 640549404 643993218 659959992 702538056 717652573 735445612 782803692 782893716 787102822 806617768 833402988 852448323 858657624 902592342 907444989 965989827 989939988 1103168418 1109099431 1136597764 1174205538 1174340574 1180654233 1203456456 1209926652 1250104482 1281098808 1287986436 1435305146 1470891224 1565607384 1565787432 1574205644 1654752627 1666805976 1704896646 1761510861 1805184684 1814889978 1931979654 1979879976 2022475433 2152957719 2206336836 2218198862 2273195528 2348411076 2348681148 2361308466 2419853304 2500208964 2557344969 2575972872 2722334967 2870610292 3125643851 3148411288 3309505254 3327298293 3409793292 3523021722 3541962699 3610369368 3629779956 3863959308 4044950866 4305915438 4412673672 4436397724 4696822152 4697362296 4722616932 4964257881 5000417928 5114689938 5444669934 5741220584 6067426299 6251287702 6458873157 6619010508 6654596586 6819586584 7046043444 7083925398 7259559912 7672034907 7727918616 8089901732 8611830876 8872795448 9376931553 9445233864 9928515762 9981894879 10229379876 10625888097 10889339868 12134852598 12200093741 12502575404 12917746314 13238021016 13309193172 14092086888 14167850796 15344069814 16179803464 17223661752 18202278897 18753863106 19376619471 19857031524 19963789758 20458759752 21251776194 21778679736 22247229763 24269705196 24400187482 25005150808 25835492628 26618386344 28130794659 28335701592 29945684637 30688139628 34382082361 36404557794 36600281223 37507726212 38753238942 39714063048 39927579516 42503552388 44494459526 48539410392 48800374964 51670985256 54606836691 56261589318 59891369274 61376279256 66741689289 68764164722 72809115588 73200562446 75015452424 77506477884 79855159032 84392383977 85007104776 88988919052 97600749928 103146247083 109213673382 109800843669 112523178636 119782738548 133483378578 137528329444 145618231176 146401124892 155012955768 168784767954 177977838104 200225067867 206292494166 218427346764 219601687338 225046357272 239565477096 266966757156 275056658888 292802249784 309438741249 329402531007 337569535908 378202905971 400450135734 412584988332 436854693528 439203374676 533933514312 600675203601 618877482498 658805062014 675139071816 756405811942 800900271468 825169976664 878406749352 928316223747 1134608717913 1201350407202 1237754964996 1317610124028 1512811623884 1601800542936 1856632447494 2269217435826 2402700814404 2475509929992 2635220248056 3025623247768 3403826153739 3713264894988 4538434871652 4805401628808 6807652307478 7426529789976 9076869743304 10211478461217 13615304614956 20422956922434 27230609229912 40845913844868 81691827689736
• Sum of all divisors σ(n): 273094872710400
• Sum of proper divisors (its aliquot sum) s(n): 191403045020664
• 81691827689736 is an abundant number, because the sum of its proper divisors (191403045020664) is greater than itself. Its abundance is 109711217330928

Bases of 81691827689736

• Binary: 10010100100110001011100010111101101100100001000₂
• Hexadecimal: 0x4A4C5C5ED908
• Base-36: SYGPGZHU0

Squares and roots of 81691827689736

• 81691827689736 squared (81691827689736²) is 6673554711289517451079749696
• 81691827689736 cubed (81691827689736³) is 545174881552689138873074484006876828320256
• The square root of 81691827689736 is 9038353.1514173531
• The cube root of 81691827689736 is 43390.3217834111

Scales and comparisons

• 81,691,827,689,736 seconds is equal to 2,597,547 years, 22 weeks, 2 days, 22 hours, 15 minutes, 36 seconds.
• To count from 1 to 81,691,827,689,736 would take you about six million, four hundred ninety-three thousand, eight hundred sixty-eight 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 81691827689736 cubic inches would be around 3615.9 feet tall.

Recreational maths with 81691827689736

• 81691827689736 backwards is 63798672819618
• The number of decimal digits it has is: 14
• The sum of 81691827689736's digits is 81
• More coming soon!