81321125439600

Names of 81321125439600

• Cardinal: 81321125439600 can be written as Eighty-one trillion, three hundred twenty-one billion, one hundred twenty-five million, four hundred thirty-nine thousand, six hundred.

Scientific notation

• Scientific notation: 8.13211254396 × 10¹³

Factors of 81321125439600

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 161

Divisors of 81321125439600

• Number of divisors d(n): 660
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 36 40 45 48 50 54 60 72 75 80 81 90 100 108 120 135 144 150 151 162 180 200 216 225 240 243 270 300 302 324 360 400 405 432 450 453 486 540 600 604 648 675 720 729 755 810 900 906 972 1080 1200 1208 1215 1296 1350 1359 1458 1510 1620 1800 1812 1944 2025 2160 2187 2265 2416 2430 2700 2718 2916 3020 3240 3600 3624 3645 3775 3888 4050 4077 4374 4530 4860 5400 5436 5832 6040 6075 6480 6561 6795 7248 7290 7550 8100 8154 8748 9060 9720 10800 10872 10935 11325 11664 12080 12150 12231 13122 13590 14580 15100 16200 16308 17496 18120 18225 19440 19683 20385 21744 21870 22650 22801 24300 24462 26244 27180 29160 30200 32400 32616 32805 33975 34992 36240 36450 36693 39366 40770 43740 45300 45602 48600 48924 52488 54360 54675 58320 59049 60400 61155 65232 65610 67950 68403 72900 73386 78732 81540 87480 90600 91204 97200 97848 98415 101925 104976 108720 109350 110079 114005 118098 122310 131220 135900 136806 145800 146772 157464 163080 164025 174960 181200 182408 183465 195696 196830 203850 205209 218700 220158 228010 236196 244620 262440 271800 273612 291600 293544 295245 305775 314928 326160 328050 330237 342015 364816 366930 393660 407700 410418 437400 440316 456020 472392 489240 492075 524880 543600 547224 550395 570025 587088 590490 611550 615627 656100 660474 684030 733860 787320 815400 820836 874800 880632 912040 917325 944784 978480 984150 990711 1026045 1094448 1100790 1140050 1180980 1223100 1231254 1312200 1320948 1368060 1467720 1476225 1574640 1630800 1641672 1651185 1710075 1761264 1824080 1834650 1846881 1968300 1981422 2052090 2201580 2280100 2361960 2446200 2462508 2624400 2641896 2736120 2751975 2935440 2952450 2972133 3078135 3283344 3302370 3420150 3442951 3669300 3693762 3936600 3962844 4104180 4403160 4560200 4723920 4892400 4925016 4953555 5130225 5283792 5472240 5503950 5540643 5904900 5944266 6156270 6604740 6840300 6885902 7338600 7387524 7873200 7925688 8208360 8255925 8806320 8916399 9120400 9234405 9850032 9907110 10260450 10328853 11007900 11081286 11809800 11888532 12312540 13209480 13680600 13771804 14677200 14775048 14860665 15390675 15851376 16416720 16511850 16621929 17214755 17832798 18468810 19814220 20520900 20657706 22015800 22162572 23619600 23777064 24625080 24767775 26418960 27361200 27543608 27703215 29550096 29721330 30781350 30986559 33023700 33243858 34429510 35665596 36937620 39628440 41041800 41315412 44031600 44325144 44581995 46172025 47554128 49250160 49535550 49865787 51644265 55087216 55406430 59442660 61562700 61973118 66047400 66487716 68859020 71331192 73875240 74303325 79256880 82083600 82630824 83109645 86073775 88650288 89163990 92344050 92959677 99071100 99731574 103288530 110812860 118885320 123125400 123946236 132094800 132975432 137718040 138516075 142662384 147750480 148606650 149597361 154932795 165261648 166219290 172147550 178327980 184688100 185919354 198142200 199463148 206577060 221625720 222909975 237770640 246250800 247892472 249328935 258221325 265950864 275436080 277032150 278879031 297213300 299194722 309865590 332438580 344295100 356655960 369376200 371838708 396284400 398926296 413154120 415548225 443251440 445819950 448792083 464798385 495784944 498657870 516442650 554064300 557758062 594426600 598389444 619731180 664877160 688590200 713311920 738752400 743677416 747986805 774663975 797852592 826308240 831096450 836637093 891639900 897584166 929596770 997315740 1032885300 1108128600 1115516124 1188853200 1196778888 1239462360 1246644675 1329754320 1346376249 1377180400 1394395155 1487354832 1495973610 1549327950 1662192900 1673274186 1783279800 1795168332 1859193540 1994631480 2065770600 2216257200 2231032248 2243960415 2323991925 2393557776 2478924720 2493289350 2509911279 2692752498 2788790310 2991947220 3098655900 3324385800 3346548372 3566559600 3590336664 3718387080 3739934025 3989262960 4131541200 4183185465 4462064496 4487920830 4647983850 4986578700 5019822558 5385504996 5577580620 5983894440 6197311800 6648771600 6693096744 6731881245 6971975775 7180673328 7436774160 7479868050 7529733837 8366370930 8975841660 9295967700 9973157400 10039645116 10771009992 11155161240 11219802075 11967788880 12394623600 12549556395 13386193488 13463762490 13943951550 14959736100 15059467674 16732741860 17951683320 18591935400 19946314800 20079290232 20915927325 21542019984 22310322480 22439604150 22589201511 25099112790 26927524980 27887903100 29919472200 30118935348 33465483720 33659406225 35903366640 37183870800 37648669185 40158580464 41831854650 44879208300 45178403022 50198225580 53855049960 55775806200 59838944400 60237870696 62747781975 66930967440 67318812450 67767604533 75297338370 83663709300 89758416600 90356806044 100396451160 107710099920 111551612400 112946007555 120475741392 125495563950 134637624900 135535209066 150594676740 167327418600 179516833200 180713612088 188243345925 200792902320 203302813599 225892015110 250991127900 269275249800 271070418132 301189353480 334654837200 338838022665 361427224176 376486691850 406605627198 451784030220 501982255800 538550499600 542140836264 564730037775 602378706960 677676045330 752973383700 813211254396 903568060440 1003964511600 1016514067995 1084281672528 1129460075550 1355352090660 1505946767400 1626422508792 1694190113325 1807136120880 2033028135990 2258920151100 2710704181320 3011893534800 3252845017584 3388380226650 4066056271980 4517840302200 5082570339975 5421408362640 6776760453300 8132112543960 9035680604400 10165140679950 13553520906600 16264225087920 20330281359900 27107041813200 40660562719800 81321125439600
• Sum of all divisors σ(n): 295013079907312
• Sum of proper divisors (its aliquot sum) s(n): 213691954467712
• 81321125439600 is an abundant number, because the sum of its proper divisors (213691954467712) is greater than itself. Its abundance is 132370829028112

Bases of 81321125439600

• Binary: 10010011111011000001100110010110110100001110000₂
• Hexadecimal: 0x49F60CCB6870
• Base-36: STQEQFR00

Squares and roots of 81321125439600

• 81321125439600 squared (81321125439600²) is 6613125442763158293248160000
• 81321125439600 cubed (81321125439600³) is 537786803678753085598704661091891136000000
• The square root of 81321125439600 is 9017822.6551424267
• The cube root of 81321125439600 is 43324.5898655751

Scales and comparisons

• 81,321,125,439,600 seconds is equal to 2,585,760 years, 12 weeks, 5 days, 15 hours.
• To count from 1 to 81,321,125,439,600 would take you about six million, four hundred sixty-four thousand, four hundred 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 81321125439600 cubic inches would be around 3610.4 feet tall.

Recreational maths with 81321125439600

• 81321125439600 backwards is 00693452112318
• 81321125439600 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81321125439600's digits is 45
• More coming soon!