81423323520

Names of 81423323520

• Cardinal: 81423323520 can be written as Eighty-one billion, four hundred twenty-three million, three hundred twenty-three thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.142332352 × 10¹⁰

Factors of 81423323520

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 189

Divisors of 81423323520

• Number of divisors d(n): 1536
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 14 15 16 19 20 21 22 24 28 30 32 33 35 38 40 41 42 44 48 49 55 56 57 60 64 66 70 76 77 80 82 84 88 95 96 98 101 105 110 112 114 120 123 128 132 133 140 147 152 154 160 164 165 168 176 190 192 196 202 205 209 210 220 224 228 231 240 245 246 264 266 280 285 287 294 303 304 308 320 328 330 336 352 380 384 385 392 399 404 410 418 420 440 448 451 456 462 480 490 492 505 528 532 539 560 570 574 588 606 608 615 616 627 640 656 660 665 672 704 707 735 760 770 779 784 798 808 820 836 840 861 880 896 902 912 924 931 960 980 984 1010 1045 1056 1064 1078 1111 1120 1140 1148 1155 1176 1212 1216 1230 1232 1254 1312 1320 1330 1344 1353 1408 1414 1435 1463 1470 1515 1520 1540 1558 1568 1596 1616 1617 1640 1672 1680 1722 1760 1804 1824 1848 1862 1919 1920 1960 1968 1995 2009 2020 2090 2112 2121 2128 2156 2222 2240 2255 2280 2296 2310 2337 2352 2424 2432 2460 2464 2508 2624 2640 2660 2688 2695 2706 2793 2828 2870 2926 2940 3030 3040 3080 3116 3135 3136 3157 3192 3232 3234 3280 3333 3344 3360 3444 3520 3535 3608 3648 3696 3724 3838 3895 3920 3936 3990 4018 4040 4141 4180 4224 4242 4256 4305 4312 4389 4444 4480 4510 4560 4592 4620 4655 4674 4704 4848 4920 4928 4949 5016 5248 5280 5320 5390 5412 5453 5555 5586 5656 5740 5757 5852 5880 6027 6060 6080 6160 6232 6270 6272 6314 6384 6464 6468 6560 6666 6688 6720 6765 6888 7040 7070 7216 7296 7315 7392 7448 7676 7777 7790 7840 7872 7980 8036 8080 8085 8282 8360 8484 8512 8569 8610 8624 8778 8888 9020 9120 9184 9240 9310 9348 9408 9471 9595 9696 9840 9856 9898 10032 10045 10241 10560 10605 10640 10780 10824 10906 11110 11172 11312 11480 11514 11685 11704 11760 12054 12120 12160 12320 12423 12464 12540 12628 12768 12928 12936 13120 13332 13376 13433 13440 13530 13776 13965 14140 14432 14630 14784 14847 14896 15352 15554 15580 15680 15744 15785 15960 16072 16160 16170 16359 16564 16665 16720 16968 17024 17138 17220 17248 17556 17776 18040 18240 18368 18480 18620 18696 18816 18942 19190 19392 19680 19796 20064 20090 20482 20705 21109 21120 21210 21280 21560 21648 21812 21945 22099 22220 22344 22624 22960 23028 23331 23370 23408 23520 24108 24240 24640 24745 24846 24928 25080 25256 25536 25707 25872 26240 26664 26752 26866 27060 27265 27552 27930 28280 28785 28864 28987 29260 29568 29694 29792 30135 30704 30723 31108 31160 31360 31570 31920 32144 32320 32340 32718 33128 33330 33440 33936 34276 34440 34496 35112 35552 36080 36480 36736 36960 37240 37392 37884 38171 38380 38784 38885 39360 39592 40128 40180 40299 40964 41410 42218 42420 42560 42845 43120 43296 43624 43890 44198 44440 44688 45248 45551 45920 46056 46662 46740 46816 47040 47355 48216 48480 49280 49490 49692 49856 50160 50512 51072 51205 51414 51744 53328 53732 54120 54439 54530 55104 55860 56560 57570 57728 57974 58520 59388 59584 59983 60270 61408 61446 62115 62216 62320 63140 63327 63840 64288 64640 64680 65436 66256 66297 66660 66880 67165 67872 68552 68880 68992 70224 71104 72160 73920 74235 74480 74784 75768 76342 76760 77770 78679 78720 79184 80256 80360 80598 81795 81928 82820 84436 84840 85120 85690 86240 86592 86961 87248 87780 88396 88880 89376 90496 91102 91840 92112 93324 93480 93632 94031 94080 94710 96432 96960 98980 99384 99712 100320 101024 102410 102828 103488 105545 106656 107464 108240 108878 109060 110208 110495 111720 113120 114513 115140 115948 116655 117040 118776 119168 119966 120540 122816 122892 124230 124432 124640 126280 126654 127680 128535 128576 129360 130872 132512 132594 133320 133760 134330 135744 136653 137104 137760 140448 142208 144320 144935 147763 147840 148470 148960 149568 151536 152684 153520 153615 155540 157358 158368 160720 161196 163317 163590 163856 165640 168872 169680 171380 172480 173184 173922 174496 175560 176792 177760 178752 179949 182204 183680 184224 186648 186960 187264 188062 189420 190855 192864 193920 197960 198768 200640 201495 202048 202909 204820 205656 206976 211090 213312 214928 216480 217756 218120 220990 223440 226240 227755 229026 230280 231896 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64930880 66090360 66197824 66959970 67180960 69237520 70496384 70926240 71423968 72699396 73288320 75531840 76525680 77105420 77917056 80617152 82747280 83085024 84815962 87457920 88120480 89279960 90269760 90874245 92526504 94568320 96932528 97396320 99296736 100771440 102034240 103856280 104522880 105744576 107135952 110780032 115167360 115658130 121165660 122441088 123368672 124120920 127223943 129861760 132180720 132395648 133919940 134361920 138475040 141852480 142847936 145398792 151063680 153051360 154210840 161234304 165494560 166170048 169631924 176240960 178559920 180539520 181748490 185053008 193865056 194792640 198593472 201542880 204068480 207712560 211489152 212039905 214271904 231316260 242331320 246737344 248241840 254447886 264361440 267839880 268723840 276950080 283704960 285695872 290797584 306102720 308421680 330989120 332340096 339263848 352481920 357119840 363496980 370106016 387730112 389585280 397186944 403085760 415425120 424079810 428543808 462632520 484662640 493474688 496483680 508895772 528722880 535679760 553900160 581595168 612205440 616843360 636119715 661978240 678527696 714239680 726993960 740212032 775460224 806171520 830850240 848159620 857087616 925265040 969325280 992967360 1017791544 1057445760 1071359520 1163190336 1233686720 1272239430 1357055392 1428479360 1453987920 1480424064 1661700480 1696319240 1850530080 1938650560 1985934720 2035583088 2142719040 2326380672 2467373440 2544478860 2714110784 2907975840 3392638480 3701060160 3877301120 4071166176 4285438080 5088957720 5428221568 5815951680 6785276960 7402120320 8142332352 10177915440 11631903360 13570553920 16284664704 20355830880 27141107840 40711661760 81423323520
• Sum of all divisors σ(n): 358663334400
• Sum of proper divisors (its aliquot sum) s(n): 277240010880
• 81423323520 is an abundant number, because the sum of its proper divisors (277240010880) is greater than itself. Its abundance is 195816687360

Bases of 81423323520

• Binary: 1001011110101001101010101000110000000₂
• Hexadecimal: 0x12F5355180
• Base-36: 11ELCEIO

Squares and roots of 81423323520

• 81423323520 squared (81423323520²) is 6629757613042585190400
• 81423323520 cubed (81423323520³) is 539816898985949385495099998208000
• The square root of 81423323520 is 285347.7238738729
• The cube root of 81423323520 is 4334.2731262397

Scales and comparisons

• 81,423,323,520 seconds is equal to 2,589 years, 3 days, 13 hours, 52 minutes.
• To count from 1 to 81,423,323,520 would take you about five thousand, one hundred seventy-eight 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 81423323520 cubic inches would be around 361.2 feet tall.

Recreational maths with 81423323520

• 81423323520 backwards is 02532332418
• 81423323520 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81423323520's digits is 33
• More coming soon!