81240013622820

Names of 81240013622820

• Cardinal: 81240013622820 can be written as Eighty-one trillion, two hundred forty billion, thirteen million, six hundred twenty-two thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 8.124001362282 × 10¹³

Factors of 81240013622820

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 83

Divisors of 81240013622820

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 20 23 26 30 37 39 46 52 60 65 69 74 78 92 111 115 130 138 148 156 169 185 195 222 230 260 276 299 338 345 370 390 444 460 481 507 529 555 598 676 690 740 780 845 851 897 962 1014 1058 1110 1196 1369 1380 1443 1495 1587 1690 1702 1794 1924 2028 2116 2197 2220 2405 2535 2553 2645 2738 2886 2990 3174 3380 3404 3588 3887 4107 4255 4394 4485 4810 5070 5106 5290 5476 5772 5980 6253 6348 6591 6845 6877 7215 7774 7935 8214 8510 8788 8970 9620 10140 10212 10580 10985 11063 11661 12167 12506 12765 13182 13690 13754 14430 15548 15870 16428 17020 17797 17940 18759 19435 19573 20535 20631 21970 22126 23322 24334 25012 25530 26364 27380 27508 28860 31265 31487 31740 32955 33189 34385 35594 36501 37518 38870 39146 41070 41262 43940 44252 46644 48668 50531 50653 51060 53391 55315 58305 58719 60835 62530 62974 65910 66378 68770 71188 73002 75036 77740 78292 81289 82140 82524 88985 89401 93795 94461 97865 101062 101306 103155 106782 110630 116610 117438 121670 125060 125948 131820 132756 137540 143819 146004 151593 151959 157435 158171 162578 165945 177970 178802 182505 187590 188922 195730 202124 202612 206310 213564 221260 231361 233220 234876 243340 243867 252655 253265 254449 266955 268203 287638 293595 303186 303918 314870 316342 325156 331890 355940 357604 365010 375180 377844 391460 406445 409331 412620 431457 447005 450179 462722 472305 474513 487734 505310 506530 508898 533910 536406 575276 587190 606372 607836 629740 632684 658489 663780 694083 719095 724201 730020 757965 759795 763347 790855 812890 818662 862914 894010 900358 925444 944610 949026 975468 1010620 1013060 1017796 1067820 1072812 1156805 1162213 1165019 1174380 1219335 1227993 1272245 1316978 1341015 1350537 1388166 1438190 1448402 1515930 1519590 1526694 1581710 1625780 1637324 1725828 1788020 1800716 1869647 1889220 1898052 1975467 2046655 2056223 2157285 2172603 2250895 2313610 2324426 2330038 2372565 2438670 2455986 2544490 2633956 2682030 2701074 2776332 2876380 2896804 3007693 3031860 3039180 3053388 3163420 3292445 3307837 3470415 3486639 3495057 3621005 3739294 3816735 3950934 4093310 4112446 4314570 4345206 4501790 4627220 4648852 4660076 4745130 4877340 4911972 5088980 5321303 5364060 5402148 5608941 5811065 5825095 5852327 6015386 6139965 6168669 6584890 6615674 6752685 6940830 6973278 6990114 7242010 7478588 7633470 7901868 8186620 8224892 8560357 8629140 8690412 9003580 9023079 9348235 9414613 9490260 9877335 9923511 10281115 10642606 10863015 11217882 11622130 11650190 11704654 12030772 12279930 12337338 13169780 13231348 13505370 13881660 13946556 13980228 14484020 15038465 15145247 15266940 15963909 16539185 16656623 17120714 17433195 17475285 17556981 18046158 18696470 18829226 19754670 19847022 20562230 21285212 21726030 22435764 23244260 23300380 23409308 24559860 24674676 25681071 26606515 26730899 26795437 27010740 28044705 28243839 29261635 30076930 30290494 30843345 31927818 33078370 33313246 34241428 34866390 34950570 35113962 36092316 37392940 37658452 39509340 39694044 41124460 42801785 43001881 43452060 45115395 45435741 47073065 49617555 49969869 51362142 53213030 53461798 53590874 56089410 56487678 58523270 60153860 60580988 61686690 63855636 66156740 66626492 69176939 69732780 69901140 70227924 75726235 76080251 79819545 80192697 80386311 83283115 85603570 86003762 87784905 90230790 90871482 94146130 99235110 99939738 102724284 106426060 106923596 107181748 111284641 112178820 112975356 117046540 122389969 123373380 128405355 129005643 133654495 133977185 138353878 141219195 151452470 152160502 159639090 160385394 160772622 166566230 171207140 172007524 175569810 180461580 181742964 188292260 196888211 198470220 199879476 207530817 215009405 216536099 222569282 227178705 228240753 244779938 249849345 256810710 258011286 267308990 267954370 276707756 282438390 302904940 304321004 319278180 320770788 321545244 333132460 333853923 345884695 348340681 351139620 367169907 380401255 393776422 400963485 401931555 415061634 430018810 433072198 445138564 454357410 456481506 489559876 499698690 513621420 516022572 534617980 535908740 556423205 564876780 590664633 611949845 616295051 645028215 649608297 667707846 691769390 696681362 734339814 760802510 787552844 801926970 803863110 830123268 860037620 866144396 908714820 912963012 984441055 989043263 999397380 1037654085 1045022043 1082680495 1112846410 1141203765 1181329266 1223899690 1232590102 1290056430 1299216594 1335415692 1383538780 1393362724 1468679628 1521605020 1591069597 1603853940 1607726220 1669269615 1741703405 1835849535 1848885153 1968882110 1978086526 2075308170 2090044086 2165360990 2225692820 2282407530 2362658532 2447799380 2465180204 2559546743 2580112860 2598433188 2814969287 2953323165 2967129789 3081475255 3182139194 3248041485 3338539230 3483406810 3671699070 3697770306 3937764220 3956173052 4150616340 4180088172 4330721980 4528428853 4564815060 4773208791 4945216315 5119093486 5225110215 5629938574 5906646330 5934259578 6162950510 6364278388 6496082970 6677078460 6966813620 7343398140 7395540612 7678640229 7955347985 8011835663 8444907861 9056857706 9244425765 9546417582 9890432630 10238186972 10450220430 11259877148 11813292660 11868519156 12325901020 12797733715 12992165940 13585286559 14074846435 14835648945 15357280458 15910695970 16023671326 16889815722 18113715412 18488851530 19092835164 19780865260 20900440860 22642144265 23866043955 24035506989 25595467430 27170573118 28149692870 29671297890 30714560916 31821391940 32047342652 33779631444 36594600731 36977703060 38393201145 40059178315 42224539305 45284288530 47732087910 48071013978 51190934860 54341146236 56299385740 58869575089 59342595780 67926432795 73189201462 76786402290 80118356630 84449078610 90568577060 95464175820 96142027956 104153863619 109783802193 117739150178 120177534945 135852865590 146378402924 153572804580 160236713260 168898157220 176608725267 182973003655 208307727238 219567604386 235478300356 240355069890 271705731180 294347875445 312461590857 353217450534 365946007310 416615454476 439135208772 480710139780 520769318095 548919010965 588695750890 624923181714 706434901068 731892014620 883043626335 1041538636190 1097838021930 1177391501780 1249846363428 1354000227047 1562307954285 1766087252670 2083077272380 2195676043860 2708000454094 3124615908570 3532174505340 4062000681141 5416000908188 6249231817140 6770001135235 8124001362282 13540002270470 16248002724564 20310003405705 27080004540940 40620006811410 81240013622820
• Sum of all divisors σ(n): 264775327488000
• Sum of proper divisors (its aliquot sum) s(n): 183535313865180
• 81240013622820 is an abundant number, because the sum of its proper divisors (183535313865180) is greater than itself. Its abundance is 102295300242360

Bases of 81240013622820

• Binary: 10010011110001100101010001001110100111000100100₂
• Hexadecimal: 0x49E32A274E24
• Base-36: SSP5AK0MC

Squares and roots of 81240013622820

• 81240013622820 squared (81240013622820²) is 6599939813435979181224752400
• 81240013622820 cubed (81240013622820³) is 536179200353331037954624794548181489768000
• The square root of 81240013622820 is 9013324.2270995667
• The cube root of 81240013622820 is 43310.1807142511

Scales and comparisons

• 81,240,013,622,820 seconds is equal to 2,583,181 years, 7 weeks, 2 days, 10 hours, 47 minutes.
• To count from 1 to 81,240,013,622,820 would take you about six million, four hundred fifty-seven thousand, nine hundred fifty-two 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 81240013622820 cubic inches would be around 3609.2 feet tall.

Recreational maths with 81240013622820

• 81240013622820 backwards is 02822631004218
• 81240013622820 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81240013622820's digits is 39
• More coming soon!