81744842915840

Names of 81744842915840

• Cardinal: 81744842915840 can be written as Eighty-one trillion, seven hundred forty-four billion, eight hundred forty-two million, nine hundred fifteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 8.174484291584 × 10¹³

Factors of 81744842915840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 2869

Divisors of 81744842915840

• Number of divisors d(n): 816
• Complete list of divisors:
  1 2 4 5 8 10 13 16 17 20 26 31 32 34 40 52 62 64 65 68 80 85 104 124 128 130 136 155 160 169 170 208 221 248 256 260 272 310 320 338 340 403 416 442 496 512 520 527 544 620 640 676 680 806 832 845 884 992 1024 1040 1054 1088 1105 1240 1280 1352 1360 1612 1664 1690 1768 1984 2015 2048 2080 2108 2176 2210 2480 2560 2635 2704 2720 2801 2873 3224 3328 3380 3536 3968 4030 4096 4160 4216 4352 4420 4960 5120 5239 5270 5408 5440 5602 5746 6448 6656 6760 6851 7072 7936 8060 8192 8320 8432 8704 8840 9920 10240 10478 10540 10816 10880 11204 11492 12896 13312 13520 13702 14005 14144 14365 15872 16120 16384 16640 16864 17408 17680 19840 20480 20956 21080 21632 21760 22408 22984 25792 26195 26624 27040 27404 28010 28288 28730 31744 32240 32768 33280 33728 34255 34816 35360 36413 39680 40960 41912 42160 43264 43520 44816 45968 47617 51584 52390 53248 54080 54808 56020 56576 57460 63488 64480 65536 66560 67456 68510 69632 70720 72826 79360 81920 83824 84320 86528 86831 87040 89063 89632 91936 95234 103168 104780 106496 108160 109616 112040 113152 114920 126976 128960 133120 134912 137020 139264 141440 145652 158720 163840 167648 168640 173056 173662 174080 178126 179264 182065 183872 190468 206336 209560 212992 216320 219232 224080 226304 229840 238085 253952 257920 266240 269824 274040 278528 282880 291304 317440 327680 335296 337280 346112 347324 348160 356252 358528 364130 367744 380936 412672 419120 425984 432640 434155 438464 445315 448160 452608 459680 473369 476170 507904 515840 532480 539648 548080 557056 565760 582608 619021 634880 670592 674560 692224 694648 696320 712504 717056 728260 735488 761872 825344 838240 851968 865280 868310 876928 890630 896320 905216 919360 946738 952340 1015808 1031680 1064960 1079296 1096160 1114112 1128803 1131520 1165216 1238042 1269760 1341184 1349120 1384448 1389296 1392640 1425008 1434112 1456520 1470976 1476127 1523744 1650688 1676480 1730560 1736620 1753856 1781260 1792640 1810432 1838720 1893476 1904680 2031616 2063360 2129920 2158592 2192320 2257606 2263040 2330432 2366845 2476084 2539520 2682368 2698240 2768896 2778592 2785280 2850016 2868224 2913040 2941952 2952254 3047488 3095105 3301376 3352960 3461120 3473240 3507712 3562520 3585280 3620864 3677440 3786952 3809360 4126720 4259840 4317184 4384640 4515212 4526080 4660864 4733690 4952168 5079040 5364736 5396480 5537792 5557184 5570560 5644015 5700032 5736448 5826080 5883904 5904508 6094976 6190210 6602752 6705920 6922240 6946480 7015424 7125040 7170560 7241728 7354880 7380635 7573904 7618720 8047273 8253440 8634368 8769280 9030424 9052160 9321728 9467380 9904336 10158080 10729472 10792960 11075584 11114368 11288030 11400064 11472896 11652160 11767808 11809016 12189952 12380420 13205504 13411840 13844480 13892960 14030848 14250080 14341120 14483456 14674439 14709760 14761270 15147808 15237440 16094546 16506880 17268736 17538560 18060848 18104320 18643456 18934760 19189651 19808672 21458944 21585920 22228736 22576060 22800128 22945792 23304320 23535616 23618032 24379904 24760840 26411008 26823680 27688960 27785920 28061696 28500160 28682240 29348878 29419520 29522540 30295616 30474880 32189092 33013760 34537472 35077120 36121696 36208640 37286912 37869520 38379302 39617344 40236365 42917888 43171840 44457472 45152120 45600256 45891584 46608640 47071232 47236064 48759808 49521680 53647360 55377920 55571840 56123392 57000320 57364480 58697756 58839040 59045080 60591232 60949760 64378184 66027520 70154240 72243392 72417280 73372195 74573824 75739040 76758604 79234688 80472730 85835776 86343680 88914944 90304240 91200512 91783168 93217280 94142464 94472128 95948255 97519616 99043360 107294720 111143680 112246784 114000640 114728960 117395512 117678080 118090160 121182464 121899520 128756368 132055040 140308480 144486784 146744390 149147648 151478080 153517208 158469376 160945460 171671552 172687360 177829888 180608480 182401024 183566336 186434560 188284928 188944256 191896510 195039232 198086720 214589440 222287360 224493568 228001280 229457920 234791024 235356160 236180320 242364928 243799040 249465463 257512736 280616960 288973568 293488780 298295296 302956160 307034416 316938752 321890920 343343104 355659776 361216960 364802048 372869120 377888512 383793020 390078464 396173440 429178880 444574720 448987136 456002560 458915840 469582048 470712320 472360640 484729856 487598080 498930926 515025472 561233920 577947136 586977560 596590592 605912320 614068832 633877504 643781840 711319552 722433920 729604096 745738240 755777024 767586040 780156928 792346880 858357760 889149440 912005120 917831680 939164096 941424640 944721280 969459712 975196160 997861852 1030050944 1122467840 1155894272 1173955120 1193181184 1211824640 1228137664 1247327315 1267755008 1287563680 1422639104 1444867840 1459208192 1491476480 1511554048 1535172080 1560313856 1584693760 1716715520 1778298880 1824010240 1878328192 1889442560 1938919424 1950392320 1995723704 2060101888 2244935680 2311788544 2347910240 2386362368 2423649280 2456275328 2494654630 2535510016 2575127360 2845278208 2889735680 2918416384 2982952960 3023108096 3070344160 3120627712 3169387520 3556597760 3648020480 3756656384 3778885120 3877838848 3900784640 3991447408 4120203776 4623577088 4695820480 4847298560 4912550656 4989309260 5071020032 5150254720 5690556416 5779471360 5836832768 5965905920 6046216192 6140688320 6338775040 7113195520 7296040960 7513312768 7557770240 7755677696 7801569280 7982894816 8240407552 9247154176 9391640960 9694597120 9825101312 9978618520 10142040064 10300509440 11558942720 11931811840 12092432384 12281376640 12677550080 14226391040 14592081920 15026625536 15115540480 15511355392 15603138560 15965789632 16480815104 18494308352 18783281920 19389194240 19650202624 19957237040 20284080128 20601018880 23117885440 24184864768 24562753280 25355100160 28452782080 29184163840 30053251072 30231080960 31022710784 31931579264 32961630208 36988616704 37566563840 38778388480 39300405248 39914474080 40568160256 41202037760 46235770880 48369729536 49125506560 50710200320 60106502144 60462161920 63863158528 65923260416 73977233408 75133127680 77556776960 78600810496 79828948160 82404075520 92471541760 96739459072 98251013120 101420400640 120213004288 120924323840 127726317056 131846520832 150266255360 155113553920 157201620992 159657896320 164808151040 184943083520 196502026240 202840801280 240426008576 241848647680 255452634112 263693041664 300532510720 314403241984 319315792640 329616302080 369886167040 393004052480 480852017152 483697295360 510905268224 527386083328 601065021440 628806483968 638631585280 659232604160 786008104960 961704034304 1021810536448 1202130042880 1257612967936 1277263170560 1318465208320 1572016209920 2043621072896 2404260085760 2554526341120 2636930416640 3144032419840 4087242145792 4808520171520 5109052682240 6288064839680 8174484291584 10218105364480 16348968583168 20436210728960 40872421457920 81744842915840
• Sum of all divisors σ(n): 232273448246016
• Sum of proper divisors (its aliquot sum) s(n): 150528605330176
• 81744842915840 is an abundant number, because the sum of its proper divisors (150528605330176) is greater than itself. Its abundance is 68783762414336

Bases of 81744842915840

• Binary: 10010100101100010110100010100110000000000000000₂
• Hexadecimal: 0x4A58B4530000
• Base-36: SZ528VS3K

Squares and roots of 81744842915840

• 81744842915840 squared (81744842915840²) is 6682219343335357033322905600
• 81744842915840 cubed (81744842915840³) is 546236970550136277102823038651365064704000
• The square root of 81744842915840 is 9041285.4681090565
• The cube root of 81744842915840 is 43399.7060361919

Scales and comparisons

• 81,744,842,915,840 seconds is equal to 2,599,233 years, 7 weeks, 6 days, 1 hour, 57 minutes, 20 seconds.
• To count from 1 to 81,744,842,915,840 would take you about six million, four hundred ninety-eight thousand and eighty-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 81744842915840 cubic inches would be around 3616.6 feet tall.

Recreational maths with 81744842915840

• 81744842915840 backwards is 04851924844718
• 81744842915840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81744842915840's digits is 65
• More coming soon!