81273732540

Names of 81273732540

• Cardinal: 81273732540 can be written as Eighty-one billion, two hundred seventy-three million, seven hundred thirty-two thousand, five hundred forty.

Scientific notation

• Scientific notation: 8.127373254 × 10¹⁰

Factors of 81273732540

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 9504

Divisors of 81273732540

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 13 14 15 20 21 22 26 28 30 33 35 39 42 44 52 55 60 65 66 70 77 78 84 91 105 110 121 130 132 140 143 154 156 165 169 182 195 210 220 231 242 260 273 286 308 330 338 363 364 385 390 420 429 455 462 484 507 546 572 605 660 676 715 726 770 780 845 847 858 910 924 1001 1014 1092 1155 1183 1210 1365 1430 1452 1540 1573 1690 1694 1716 1815 1820 1859 2002 2028 2145 2310 2366 2420 2535 2541 2730 2860 3003 3146 3380 3388 3549 3630 3718 4004 4235 4290 4620 4719 4732 5005 5070 5082 5460 5577 5915 6006 6292 7098 7260 7436 7865 8470 8580 9295 9438 9463 10010 10140 10164 11011 11154 11830 12012 12705 13013 14196 15015 15730 16940 17745 18590 18876 18926 20020 20449 22022 22308 23595 23660 25410 26026 27885 28389 30030 31460 33033 35490 37180 37852 39039 40898 44044 47190 47315 50820 52052 55055 55770 56778 60060 61347 65065 66066 66241 70980 78078 81796 94380 94630 102245 104093 110110 111540 113556 122694 123019 130130 132132 132482 141945 143143 156156 165165 189260 195195 198723 204490 208186 220220 245388 246038 260260 264964 283890 286286 306735 312279 330330 331205 369057 390390 397446 408980 416372 429429 492076 520465 567780 572572 613470 615095 624558 660660 662410 715715 728651 738114 780780 794892 858858 861133 993615 1040930 1145023 1226940 1230190 1249116 1324820 1353209 1431430 1457302 1476228 1561395 1599247 1717716 1722266 1845285 1987230 2081860 2147145 2185953 2290046 2460380 2583399 2706418 2862860 2914604 3122790 3198494 3435069 3444532 3643255 3690570 3974460 4059627 4294290 4305665 4371906 4580092 4797741 5166798 5412836 5725115 6245580 6396988 6766045 6870138 7286510 7381140 7996235 8015161 8119254 8588580 8611330 8743812 9472463 9595482 10333596 10929765 11194729 11450230 12916995 13532090 13740276 14573020 14885299 15992470 16030322 16238508 17175345 17222660 17591717 18944926 19190964 20298135 21859530 22389458 22900460 23988705 24045483 25833990 27064180 28417389 29770598 31984940 32060644 33584187 34350690 35183434 37889852 40075805 40596270 43719060 44655897 44778916 47362315 47977410 48090966 51667980 52775151 55973645 56834778 59541196 67168374 68701380 70366868 74426495 80151610 81192540 87958585 89311794 94724630 95954820 96181932 104197093 105550302 111947290 113669556 120227415 123142019 134336748 142086945 148852990 160303220 167920935 175917170 178623588 189449260 193508887 208394186 211100604 223279485 223894580 240454830 246284038 263875755 284173890 297705980 312591279 335841870 351834340 369426057 387017774 416788372 446558970 480909660 492568076 520985465 527751510 568347780 580526661 615710095 625182558 671683740 738852114 774035548 893117940 967544435 1041970930 1055503020 1161053322 1231420190 1250365116 1354562209 1477704228 1562956395 1847130285 1935088870 2083941860 2322106644 2462840380 2709124418 2902633305 3125912790 3694260570 3870177740 4063686627 5418248836 5805266610 6251825580 6772811045 7388521140 8127373254 11610533220 13545622090 16254746508 20318433135 27091244180 40636866270 81273732540
• Sum of all divisors σ(n): 309582733824
• Sum of proper divisors (its aliquot sum) s(n): 228309001284
• 81273732540 is an abundant number, because the sum of its proper divisors (228309001284) is greater than itself. Its abundance is 147035268744

Bases of 81273732540

• Binary: 1001011101100010010101011110110111100₂
• Hexadecimal: 0x12EC4ABDBC
• Base-36: 11C4A5DO

Squares and roots of 81273732540

• 81273732540 squared (81273732540²) is 6605419600983454851600
• 81273732540 cubed (81273732540³) is 536847105964802830574103791064000
• The square root of 81273732540 is 285085.4828643507
• The cube root of 81273732540 is 4331.6171893285

Scales and comparisons

• 81,273,732,540 seconds is equal to 2,584 years, 13 weeks, 1 day, 4 hours, 49 minutes.
• To count from 1 to 81,273,732,540 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 81273732540 cubic inches would be around 361 feet tall.

Recreational maths with 81273732540

• 81273732540 backwards is 04523737218
• 81273732540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81273732540's digits is 42
• More coming soon!