81638130880800

Names of 81638130880800

• Cardinal: 81638130880800 can be written as Eighty-one trillion, six hundred thirty-eight billion, one hundred thirty million, eight hundred eighty thousand, eight hundred.

Scientific notation

• Scientific notation: 8.16381308808 × 10¹³

Factors of 81638130880800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 8214

Divisors of 81638130880800

• Number of divisors d(n): 486
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 30 32 36 39 40 45 48 50 52 60 65 72 75 78 80 90 96 100 104 117 120 130 144 150 156 160 169 180 195 200 208 225 234 240 260 288 300 312 325 338 360 390 400 416 450 468 480 507 520 585 600 624 650 676 720 780 800 845 900 936 975 1014 1040 1170 1200 1248 1300 1352 1440 1521 1560 1690 1800 1872 1950 2028 2080 2340 2400 2535 2600 2704 2925 3042 3120 3380 3600 3744 3900 4056 4225 4680 5070 5200 5408 5850 6084 6240 6760 7200 7605 7800 8112 8191 8450 9360 10140 10400 11700 12168 12675 13520 15210 15600 16224 16382 16900 18720 20280 23400 24336 24573 25350 27040 30420 31200 32764 33800 38025 40560 40955 46800 48672 49146 50700 60840 65528 67600 73719 76050 81120 81910 93600 98292 101400 106483 121680 122865 131056 135200 147438 152100 163820 196584 202800 204775 212966 243360 245730 262112 294876 304200 319449 327640 368595 393168 405600 409550 425932 491460 532415 589752 608400 614325 638898 655280 737190 786336 819100 851864 958347 982920 1064830 1179504 1216800 1228650 1277796 1310560 1384279 1474380 1597245 1638200 1703728 1842975 1916694 1965840 2129660 2359008 2457300 2555592 2662075 2768558 2948760 3194490 3276400 3407456 3685950 3833388 3931680 4152837 4259320 4791735 4914600 5111184 5324150 5537116 5897520 6388980 6552800 6921395 7371900 7666776 7986225 8305674 8518640 9583470 9829200 10222368 10648300 11074232 11795040 12458511 12777960 13842790 14743800 15333552 15972450 16611348 17037280 19166940 19658400 20764185 21296600 22148464 23958675 24917022 25555920 27685580 29487600 30667104 31944900 33222696 34606975 38333880 41528370 42593200 44296928 47917350 49834044 51111840 55371160 58975200 62292555 63889800 66445392 67092481 69213950 76667760 83056740 85186400 95834700 99668088 103820925 110742320 124585110 127779600 132890784 134184962 138427900 153335520 166113480 191669400 199336176 201277443 207641850 221484640 249170220 255559200 268369924 276855800 311462775 332226960 335462405 383338800 398672352 402554886 415283700 498340440 536739848 553711600 603832329 622925550 664453920 670924810 766677600 805109772 830567400 872202253 996680880 1006387215 1073479696 1107423200 1207664658 1245851100 1341849620 1610219544 1661134800 1677312025 1744404506 1993361760 2012774430 2146959392 2415329316 2491702200 2616606759 2683699240 3019161645 3220439088 3322269600 3354624050 3488809012 4025548860 4361011265 4830658632 4983404400 5031936075 5233213518 5367398480 6038323290 6440878176 6709248100 6977618024 7849820277 8051097720 8722022530 9661317264 9966808800 10063872150 10466427036 10734796960 11338629289 12076646580 13083033795 13418496200 13955236048 15095808225 15699640554 16102195440 17444045060 19322634528 20127744300 20932854072 21805056325 22677258578 24153293160 26166067590 26836992400 27910472096 30191616450 31399281108 32204390880 34015887867 34888090120 39249101385 40255488600 41865708144 43610112650 45354517156 48306586320 52332135180 53673984800 56693146445 60383232900 62798562216 65415168975 68031775734 69776180240 78498202770 80510977200 83731416288 87220225300 90709034312 96613172640 102047663601 104664270360 113386292890 120766465800 125597124432 130830337950 136063551468 139552360480 156996405540 161021954400 170079439335 174440450600 181418068624 196245506925 204095327202 209328540720 226772585780 241532931600 251194248864 261660675900 272127102936 283465732225 313992811080 340158878670 348880901200 362836137248 392491013850 408190654404 418657081440 453545171560 483065863200 510238318005 523321351800 544254205872 566931464450 627985622160 680317757340 697761802400 784982027700 816381308808 850397196675 907090343120 1020476636010 1046642703600 1088508411744 1133862928900 1255971244320 1360635514680 1569964055400 1632762617616 1700794393350 1814180686240 2040953272020 2093285407200 2267725857800 2551191590025 2721271029360 3139928110800 3265525235232 3401588786700 4081906544040 4535451715600 5102383180050 5442542058720 6279856221600 6803177573400 8163813088080 9070903431200 10204766360100 13606355146800 16327626176160 20409532720200 27212710293600 40819065440400 81638130880800
• Sum of all divisors σ(n): 311762274583851
• Sum of proper divisors (its aliquot sum) s(n): 230124143703051
• 81638130880800 is an abundant number, because the sum of its proper divisors (230124143703051) is greater than itself. Its abundance is 148486012822251

Bases of 81638130880800

• Binary: 10010100011111111011011110010101001000100100000₂
• Hexadecimal: 0x4A3FDBCA9120
• Base-36: SXS1FAIW0

Squares and roots of 81638130880800

• 81638130880800 squared (81638130880800²) is 6664784413710630583808640000
• 81638130880800 cubed (81638130880800³) is 544100542258824353579269065661850112000000
• The square root of 81638130880800 is 9035382.1657304569
• The cube root of 81638130880800 is 43380.8127437103

Scales and comparisons

• 81,638,130,880,800 seconds is equal to 2,595,840 years, 2 weeks, 2 hours.
• To count from 1 to 81,638,130,880,800 would take you about six million, four hundred eighty-nine thousand, six 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 81638130880800 cubic inches would be around 3615.1 feet tall.

Recreational maths with 81638130880800

• 81638130880800 backwards is 00808803183618
• The number of decimal digits it has is: 14
• The sum of 81638130880800's digits is 54
• More coming soon!