81631427040

Names of 81631427040

• Cardinal: 81631427040 can be written as Eighty-one billion, six hundred thirty-one million, four hundred twenty-seven thousand and forty.

Scientific notation

• Scientific notation: 8.163142704 × 10¹⁰

Factors of 81631427040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 107

Divisors of 81631427040

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 30 31 32 36 40 43 45 46 48 60 62 69 72 80 86 90 92 93 96 115 120 124 129 138 144 155 160 172 180 184 186 207 215 230 240 248 258 276 279 288 310 344 345 360 368 372 387 414 430 460 465 480 496 516 552 558 620 645 688 690 713 720 736 744 774 828 860 920 930 989 992 1032 1035 1104 1116 1240 1290 1333 1376 1380 1395 1426 1440 1488 1548 1656 1720 1840 1849 1860 1935 1978 2064 2070 2139 2208 2232 2480 2580 2666 2760 2790 2852 2967 2976 3096 3312 3440 3565 3680 3698 3720 3870 3956 3999 4128 4140 4278 4464 4945 4960 5160 5332 5520 5547 5580 5704 5934 6192 6417 6624 6665 6880 7130 7396 7440 7740 7912 7998 8280 8556 8901 8928 9245 9890 10320 10664 10695 11040 11094 11160 11408 11868 11997 12384 12834 13330 14260 14792 14835 14880 15480 15824 15996 16560 16641 17112 17802 18490 19780 19995 20640 21328 21390 22188 22320 22816 23736 23994 25668 26660 27735 28520 29584 29670 30659 30960 31648 31992 32085 33120 33282 34224 35604 36980 39560 39990 42527 42656 42780 44376 44505 44640 47472 47988 51336 53320 55470 57040 57319 59168 59340 59985 61318 61920 63984 64170 66564 68448 71208 73960 79120 79507 79980 83205 85054 85560 88752 89010 91977 94944 95976 102672 106640 110940 114080 114638 118680 119970 122636 127581 127968 128340 133128 142416 147920 153295 158240 159014 159960 166410 170108 171120 171957 177504 178020 183954 191952 205344 212635 213280 221880 229276 237360 238521 239940 245272 255162 256680 266256 275931 284832 286595 295840 306590 318028 319920 332820 340216 342240 343914 356040 367908 382743 383904 397535 425270 443760 458552 459885 474720 477042 479880 490544 510324 513360 515871 532512 551862 573190 613180 636056 637905 639840 665640 680432 687828 712080 715563 735816 765486 795070 850540 859785 887520 917104 919770 954084 959760 981088 1020648 1026720 1031742 1103724 1146380 1192605 1226360 1272112 1275810 1318337 1331280 1360864 1375656 1379655 1424160 1431126 1471632 1530972 1590140 1701080 1719570 1828661 1834208 1839540 1908168 1913715 1919520 2041296 2063484 2207448 2292760 2385210 2452720 2464717 2544224 2551620 2579355 2636674 2662560 2751312 2759310 2862252 2943264 3061944 3180280 3402160 3439140 3577815 3657322 3679080 3816336 3827430 3955011 4082592 4126968 4414896 4585520 4770420 4905440 4929434 5103240 5158710 5273348 5485983 5502624 5518620 5724504 6123888 6360560 6591685 6804320 6878280 7155630 7314644 7358160 7394151 7632672 7654860 7910022 8253936 8829792 9143305 9171040 9540840 9858868 10206480 10317420 10546696 10971966 11037240 11449008 11865033 12247776 12323585 12721120 13183370 13756560 14311260 14629288 14716320 14788302 15309720 15820044 16457949 16507872 18286610 19081680 19717736 19775055 20412960 20634840 21093392 21943932 22074480 22182453 22898016 23730066 24647170 26366740 27429915 27513120 28622520 29258576 29576604 30619440 31640088 32915898 36573220 36970755 38163360 39435472 39550110 41269680 42186784 43887864 44148960 44364906 47460132 49294340 52733480 54859830 56688491 57245040 58517152 59153208 59325165 61238880 63280176 65831796 73146440 73941510 78870944 79100220 82289745 82539360 87775728 88729812 94920264 98588680 105466960 109719660 110912265 113376982 114490080 118306416 118650330 126560352 131663592 146292880 147883020 158200440 164579490 170065473 175551456 177459624 189840528 197177360 210933920 219439320 221824530 226753964 236612832 237300660 263327184 283442455 292585760 295766040 316400880 329158980 340130946 354919248 379681056 394354720 438878640 443649060 453507928 474601320 510196419 526654368 566884910 591532080 632801760 658317960 680261892 709838496 850327365 877757280 887298120 907015856 949202640 1020392838 1133769820 1183064160 1316635920 1360523784 1700654730 1774596240 1814031712 1898405280 2040785676 2267539640 2550982095 2633271840 2721047568 3401309460 3549192480 4081571352 4535079280 5101964190 5442095136 6802618920 8163142704 9070158560 10203928380 13605237840 16326285408 20407856760 27210475680 40815713520 81631427040
• Sum of all divisors σ(n): 307199692800
• Sum of proper divisors (its aliquot sum) s(n): 225568265760
• 81631427040 is an abundant number, because the sum of its proper divisors (225568265760) is greater than itself. Its abundance is 143936838720

Bases of 81631427040

• Binary: 1001100000001100111001011100111100000₂
• Hexadecimal: 0x13019CB9E0
• Base-36: 11I18S80

Squares and roots of 81631427040

• 81631427040 squared (81631427040²) is 6663689880586843161600
• 81631427040 cubed (81631427040³) is 543966514304311199930073329664000
• The square root of 81631427040 is 285712.1401690869
• The cube root of 81631427040 is 4337.9625283799

Scales and comparisons

• 81,631,427,040 seconds is equal to 2,595 years, 32 weeks, 4 days, 4 hours, 24 minutes.
• To count from 1 to 81,631,427,040 would take you about five thousand, one hundred ninety-one 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 81631427040 cubic inches would be around 361.5 feet tall.

Recreational maths with 81631427040

• 81631427040 backwards is 04072413618
• 81631427040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81631427040's digits is 36
• More coming soon!