81648823520

Names of 81648823520

• Cardinal: 81648823520 can be written as Eighty-one billion, six hundred forty-eight million, eight hundred twenty-three thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.164882352 × 10¹⁰

Factors of 81648823520

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 726

Divisors of 81648823520

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 37 40 41 44 53 55 74 80 82 88 106 110 148 160 164 176 185 205 212 220 265 296 328 352 370 407 410 424 440 451 530 577 583 592 656 740 814 820 848 880 902 1060 1154 1166 1184 1312 1480 1517 1628 1640 1696 1760 1804 1961 2035 2120 2173 2255 2308 2332 2885 2915 2960 3034 3256 3280 3608 3922 4070 4240 4346 4510 4616 4664 5770 5830 5920 6068 6347 6512 6560 7216 7585 7844 8140 8480 8692 9020 9232 9328 9805 10865 11540 11660 12136 12694 13024 14432 15170 15688 16280 16687 17384 18040 18464 18656 19610 21349 21571 21730 23080 23320 23657 23903 24272 25388 30340 30581 31376 31735 32560 33374 34768 36080 39220 42698 43142 43460 46160 46640 47314 47806 48544 50776 60680 61162 62752 63470 65120 66748 69536 72160 78440 80401 83435 85396 86284 86920 92320 93280 94628 95612 101552 106745 107855 118285 119515 121360 122324 126940 133496 152905 156880 160802 166870 170792 172568 173840 189256 191224 203104 213490 215710 234839 236570 239030 242720 244648 253880 260227 266992 305810 313760 321604 333740 336391 341584 345136 347680 378512 382448 402005 426980 431420 469678 473140 478060 489296 507760 520454 533984 611620 643208 667480 672782 683168 690272 757024 764896 804010 853960 862840 875309 884411 939356 946280 956120 978592 1015520 1040908 1131497 1174195 1223240 1253821 1286416 1301135 1334960 1345564 1608020 1681955 1707920 1725680 1750618 1768822 1878712 1892560 1912240 2081816 2262994 2348390 2446480 2507642 2572832 2602270 2669920 2691128 3216040 3363910 3415840 3451360 3501236 3537644 3757424 3785120 3824480 4163632 4376545 4422055 4525988 4696780 4892960 5015284 5204540 5382256 5657485 6269105 6432080 6727820 7002472 7075288 7514848 8327264 8753090 8844110 9051976 9393560 9628399 10030568 10409080 10764512 11314970 12446467 12538210 12864160 13455640 13792031 14004944 14150576 17506180 17688220 18103952 18787120 19256798 20061136 20818160 22629940 24892934 25076420 26911280 27584062 28009888 28301152 35012360 35376440 36207904 37574240 38513596 40122272 41636320 45259880 46391377 48141995 49785868 50152840 53822560 55168124 62232335 68960155 70024720 70752880 77027192 90519760 92782754 96283990 99571736 100305680 110336248 124464670 137920310 140049440 141505760 154054384 181039520 185565508 192567980 199143472 200611360 220672496 231956885 248929340 275840620 308108768 371131016 385135960 398286944 441344992 463913770 497858680 510305147 551681240 742262032 770271920 927827540 995717360 1020610294 1103362480 1484524064 1540543840 1855655080 1991434720 2041220588 2206724960 2551525735 3711310160 4082441176 5103051470 7422620320 8164882352 10206102940 16329764704 20412205880 40824411760 81648823520
• Sum of all divisors σ(n): 225957900672
• Sum of proper divisors (its aliquot sum) s(n): 144309077152
• 81648823520 is an abundant number, because the sum of its proper divisors (144309077152) is greater than itself. Its abundance is 62660253632

Bases of 81648823520

• Binary: 1001100000010101001100010110011100000₂
• Hexadecimal: 0x1302A62CE0
• Base-36: 11IBLNFK

Squares and roots of 81648823520

• 81648823520 squared (81648823520²) is 6666530382200105190400
• 81648823520 cubed (81648823520³) is 544314362666974538016405598208000
• The square root of 81648823520 is 285742.5826158923
• The cube root of 81648823520 is 4338.2706610069

Scales and comparisons

• 81,648,823,520 seconds is equal to 2,596 years, 9 weeks, 2 days, 12 hours, 45 minutes, 20 seconds.
• To count from 1 to 81,648,823,520 would take you about five thousand, one hundred ninety-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 81648823520 cubic inches would be around 361.5 feet tall.

Recreational maths with 81648823520

• 81648823520 backwards is 02532884618
• The number of decimal digits it has is: 11
• The sum of 81648823520's digits is 47
• More coming soon!