81272135490

Names of 81272135490

• Cardinal: 81272135490 can be written as Eighty-one billion, two hundred seventy-two million, one hundred thirty-five thousand, four hundred ninety.

Scientific notation

• Scientific notation: 8.127213549 × 10¹⁰

Factors of 81272135490

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 295

Divisors of 81272135490

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 21 26 30 31 35 39 42 49 61 62 65 70 78 91 93 98 105 122 130 147 155 169 173 182 183 186 195 210 217 245 273 294 305 310 338 346 366 390 403 427 434 455 465 490 507 519 546 610 637 651 735 793 806 845 854 865 910 915 930 1014 1038 1085 1183 1209 1211 1274 1281 1302 1365 1470 1519 1586 1690 1730 1830 1891 1911 2015 2135 2170 2249 2366 2379 2418 2422 2535 2562 2595 2730 2821 2989 3038 3185 3255 3549 3633 3782 3822 3965 4030 4270 4498 4557 4758 5070 5190 5239 5363 5551 5642 5673 5915 5978 6045 6055 6370 6405 6510 6747 7098 7266 7595 7930 8281 8463 8477 8967 9114 9455 9555 10309 10478 10553 10726 11102 11245 11346 11830 11895 12090 12110 12810 13237 13494 14105 14945 15190 15717 15743 16089 16562 16653 16926 16954 17745 17934 18165 18910 19110 19747 20618 21106 22490 22785 23790 24583 24843 25431 26195 26474 26815 27755 28210 28365 29237 29890 30927 31434 31486 31659 32178 33306 33735 35490 36330 36673 37541 38857 39494 39711 41405 42315 42385 44835 45570 47229 49166 49686 50862 51545 52390 52765 53630 55510 56730 58474 59241 61854 63318 66185 67470 69719 72163 73346 73749 73871 75082 77714 78585 78715 79422 80445 82810 83265 84630 84770 87711 89670 92659 94458 98735 103090 105530 110019 110201 112623 116571 118482 122915 124215 127155 132370 137189 139438 144326 146185 147498 147742 154635 157170 157430 158295 160890 166530 172081 175422 183365 185318 187705 194285 197470 198555 204659 209157 216489 220038 220402 221613 225246 233142 236145 245830 248430 254310 256711 262787 274378 277977 292370 296205 309270 316590 319579 327143 330603 344162 348595 360815 366730 368745 369355 375410 388570 397110 409318 411567 418314 432978 438555 443226 463295 472290 488033 505141 513422 516243 517097 525574 550095 551005 555954 563115 582855 592410 613977 639158 654286 661206 685945 697190 721630 737490 738710 770133 788361 823134 860405 877110 906347 926590 958737 960323 976066 981429 1010282 1023295 1032486 1034194 1045785 1082445 1100190 1102010 1108065 1126230 1165710 1204567 1227954 1283555 1313935 1371890 1389885 1432613 1464099 1515423 1540266 1551291 1576722 1597895 1635715 1653015 1720810 1783457 1812694 1917474 1920646 1962858 2046590 2057835 2091570 2164890 2216130 2237053 2290001 2409134 2440165 2525705 2567110 2581215 2585485 2627870 2719041 2779770 2865226 2880969 2928198 3030846 3069885 3102582 3195790 3271430 3306030 3416231 3566914 3613701 3850665 3941805 4115670 4252859 4297839 4474106 4531735 4580002 4793685 4801615 4880330 4907145 5051410 5162430 5170970 5350371 5438082 5761938 6022835 6139770 6344429 6711159 6722261 6832462 6870003 7163065 7227402 7320495 7577115 7701330 7756455 7883610 8505718 8595678 8917285 9063470 9587370 9603230 9814290 10248693 10700742 11185265 11450005 12045670 12484199 12688858 12758577 13422318 13444522 13595205 13740006 14326130 14404845 14640990 15154230 15512910 15659371 16030007 17081155 17834570 18068505 19033287 20166783 20497386 21264295 21489195 22370530 22900010 24968398 25517154 26751855 27190410 28809690 29770013 31318742 31722145 32060014 33555795 33611305 34162310 34350015 36137010 37452597 38066574 40333566 42528590 42978390 44411003 46978113 48090021 51243465 53503710 55287167 59540026 62420995 63444290 63792885 67111590 67222610 68700030 74905194 78296855 80150035 87389393 88822006 89310039 93956226 95166435 96180042 100833915 102486930 110574334 124841990 127585770 133233009 148850065 156593710 160300070 165861501 174778786 178620078 187262985 190332870 201667830 208390091 222055015 234890565 240450105 262168179 266466018 276435835 297700130 331723002 374525970 387010169 416780182 436946965 444110030 446550195 469781130 480900210 524336358 552871670 625170273 666165045 774020338 829307505 873893930 893100390 1041950455 1161030507 1250340546 1310840895 1332330090 1658615010 1935050845 2083900910 2322061014 2621681790 2709071183 3125851365 3870101690 5418142366 5805152535 6251702730 8127213549 11610305070 13545355915 16254427098 27090711830 40636067745 81272135490
• Sum of all divisors σ(n): 259268262912
• Sum of proper divisors (its aliquot sum) s(n): 177996127422
• 81272135490 is an abundant number, because the sum of its proper divisors (177996127422) is greater than itself. Its abundance is 96723991932

Bases of 81272135490

• Binary: 1001011101100001100100101111101000010₂
• Hexadecimal: 0x12EC325F42
• Base-36: 11C3BX36

Squares and roots of 81272135490

• 81272135490 squared (81272135490²) is 6605160007104917540100
• 81272135490 cubed (81272135490³) is 536815459030560220964284708149000
• The square root of 81272135490 is 285082.6818486175
• The cube root of 81272135490 is 4331.5888166743

Scales and comparisons

• 81,272,135,490 seconds is equal to 2,584 years, 10 weeks, 3 days, 17 hours, 11 minutes, 30 seconds.
• To count from 1 to 81,272,135,490 would take you about five thousand, one 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 81272135490 cubic inches would be around 361 feet tall.

Recreational maths with 81272135490

• 81272135490 backwards is 09453127218
• 81272135490 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81272135490's digits is 42
• More coming soon!