81421371085824

Names of 81421371085824

• Cardinal: 81421371085824 can be written as Eighty-one trillion, four hundred twenty-one billion, three hundred seventy-one million, eighty-five thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 8.1421371085824 × 10¹³

Factors of 81421371085824

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 460899

Divisors of 81421371085824

• Number of divisors d(n): 704
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 32 33 36 42 44 48 54 56 63 64 66 72 77 83 84 88 96 99 108 112 126 128 132 144 154 166 168 176 189 192 198 216 224 231 249 252 256 264 288 297 308 332 336 352 378 384 396 432 448 462 498 504 512 528 576 581 594 616 664 672 693 704 747 756 768 792 864 896 913 924 996 1008 1024 1056 1152 1162 1188 1232 1328 1344 1386 1408 1494 1512 1536 1584 1728 1743 1792 1826 1848 1992 2016 2079 2112 2241 2304 2324 2376 2464 2656 2688 2739 2772 2816 2988 3024 3072 3168 3456 3486 3584 3652 3696 3984 4032 4158 4224 4482 4608 4648 4752 4928 5229 5312 5376 5478 5544 5632 5976 6048 6336 6391 6912 6972 7168 7304 7392 7968 8064 8217 8316 8448 8964 9216 9296 9504 9856 10458 10624 10752 10956 11088 11264 11952 12096 12672 12782 13824 13944 14608 14784 15687 15936 16128 16434 16632 16896 17928 18592 19008 19173 19712 20916 21248 21504 21912 22176 23904 24192 24651 25344 25564 27648 27888 29216 29568 31374 31872 32256 32868 33264 33792 35856 37184 38016 38346 39424 41832 42496 43824 44352 47808 48384 49302 50688 51128 55776 57519 58432 59136 62748 63744 64512 65736 66528 71712 74368 76032 76692 78848 83664 84992 87648 88704 95616 96768 98604 101376 102256 111552 115038 116864 118272 125496 127488 131472 133056 143424 148736 152064 153384 167328 172557 175296 177408 191232 193536 197208 204512 223104 230076 233728 236544 250992 254976 262944 266112 286848 297472 304128 306768 334656 345114 350592 354816 382464 394416 409024 446208 460152 460793 467456 501984 525888 532224 573696 594944 613536 669312 690228 701184 709632 764928 788832 818048 892416 920304 921586 934912 1003968 1051776 1064448 1147392 1227072 1338624 1380456 1382379 1402368 1577664 1636096 1784832 1840608 1843172 2007936 2103552 2128896 2294784 2454144 2677248 2760912 2764758 2804736 3155328 3225551 3272192 3681216 3686344 4015872 4147137 4207104 4908288 5068723 5354496 5521824 5529516 6310656 6451102 6544384 7362432 7372688 8031744 8294274 8414208 9676653 9816576 10137446 11043648 11059032 12441411 12621312 12902204 14724864 14745376 15206169 16063488 16588548 19353306 19633152 20274892 22087296 22118064 24882822 25242624 25804408 29029959 29449728 29490752 30412338 33177096 35481061 38245819 38706612 40549784 44174592 44236128 45618507 49765644 51608816 58059918 58899456 58981504 60824676 66354192 70962122 76491638 77413224 81099568 87089877 88349184 88472256 91237014 99531288 103217632 106443183 114737457 116119836 117963008 121649352 132708384 136855521 141924244 152983276 154826448 162199136 174179754 176698368 176944512 182474028 199062576 206435264 212886366 229474914 232239672 235926016 243298704 265416768 267720733 273711042 283848488 305966552 309652896 319329549 324398272 344212371 348359508 353889024 364948056 398125152 412870528 420704009 425772732 458949828 464479344 471852032 486597408 530833536 535441466 547422084 567696976 611933104 619305792 638659098 648796544 688424742 696719016 707778048 729896112 796250304 803162199 825741056 841408018 851545464 917899656 928958688 957988647 973194816 1032637113 1061667072 1070882932 1094844168 1135393952 1223866208 1238611584 1262112027 1277318196 1297593088 1376849484 1393438032 1415556096 1459792224 1592500608 1606324398 1651482112 1682816036 1703090928 1835799312 1857917376 1915977294 1946389632 2065274226 2123334144 2141765864 2189688336 2270787904 2409486597 2447732416 2477223168 2524224054 2554636392 2595186176 2753698968 2786876064 2919584448 2944928063 3185001216 3212648796 3302964224 3365632072 3406181856 3671598624 3715834752 3786336081 3831954588 3892779264 4130548452 4246668288 4283531728 4379376672 4541575808 4818973194 4895464832 4954446336 5048448108 5109272784 5190372352 5507397936 5573752128 5839168896 5889856126 6370002432 6425297592 6731264144 6812363712 7228459791 7343197248 7431669504 7572672162 7663909176 7785558528 8261096904 8567063456 8758753344 8834784189 9083151616 9637946388 9790929664 9908892672 10096896216 10218545568 11014795872 11147504256 11359008243 11678337792 11779712252 12740004864 12850595184 13462528288 13624727424 14456919582 14686394496 14863339008 15145344324 15327818352 15571117056 16522193808 17134126912 17517506688 17669568378 18166303232 19275892776 19581859328 20193792432 20437091136 22029591744 22295008512 22718016486 23356675584 23559424504 25701190368 26504352567 26925056576 27249454848 28913839164 29372788992 29726678016 30290688648 30655636704 33044387616 34268253824 35035013376 35339136756 36332606464 38551785552 39163718656 40387584864 40874182272 44059183488 44590017024 45436032972 46713351168 47118849008 51402380736 53008705134 53850113152 54498909696 57827678328 58745577984 60581377296 61311273408 66088775232 68536507648 70070026752 70678273512 77103571104 79513057701 80775169728 81748364544 88118366976 89180034048 90872065944 94237698016 102804761472 106017410268 107700226304 108997819392 115655356656 117491155968 121162754592 122622546816 132177550464 137073015296 140140053504 141356547024 154207142208 159026115402 161550339456 163496729088 176236733952 181744131888 188475396032 205609522944 212034820536 215400452608 231310713312 242325509184 245245093632 264355100928 274146030592 282713094048 308414284416 318052230804 323100678912 326993458176 352473467904 363488263776 376950792064 411219045888 424069641072 430800905216 462621426624 484651018368 490490187264 528710201856 565426188096 616828568832 636104461608 646201357824 726976527552 753901584128 822438091776 848139282144 925242853248 969302036736 980980374528 1057420403712 1130852376192 1233657137664 1272208923216 1292402715648 1453953055104 1507803168256 1696278564288 1850485706496 1938604073472 2261704752384 2467314275328 2544417846432 2907906110208 3015606336512 3392557128576 3700971412992 3877208146944 4523409504768 5088835692864 5815812220416 6785114257152 7401942825984 9046819009536 10177671385728 11631624440832 13570228514304 20355342771456 27140457028608 40710685542912 81421371085824
• Sum of all divisors σ(n): 304253209774080
• Sum of proper divisors (its aliquot sum) s(n): 222831838688256
• 81421371085824 is an abundant number, because the sum of its proper divisors (222831838688256) is greater than itself. Its abundance is 141410467602432

Bases of 81421371085824

• Binary: 10010100000110101100011111001101001010000000000₂
• Hexadecimal: 0x4A0D63E69400
• Base-36: SV0GM3UO0

Squares and roots of 81421371085824

• 81421371085824 squared (81421371085824²) is 6629439669495456496773758976
• 81421371085824 cubed (81421371085824³) is 539778067421071976432954591028587186356224
• The square root of 81421371085824 is 9023379.1389824689
• The cube root of 81421371085824 is 43342.3848239627

Scales and comparisons

• 81,421,371,085,824 seconds is equal to 2,588,947 years, 38 weeks, 6 days, 3 hours, 50 minutes, 24 seconds.
• To count from 1 to 81,421,371,085,824 would take you about six million, four hundred seventy-two thousand, three hundred sixty-nine 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 81421371085824 cubic inches would be around 3611.9 feet tall.

Recreational maths with 81421371085824

• 81421371085824 backwards is 42858017312418
• 81421371085824 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81421371085824's digits is 54
• More coming soon!