81810908000

Names of 81810908000

• Cardinal: 81810908000 can be written as Eighty-one billion, eight hundred ten million, nine hundred eight thousand.

Scientific notation

• Scientific notation: 8.1810908 × 10¹⁰

Factors of 81810908000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 71

Divisors of 81810908000

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 25 32 40 41 46 50 80 82 92 100 115 125 160 164 184 200 205 230 250 328 368 400 410 460 500 529 575 656 736 800 820 920 943 1000 1025 1058 1150 1312 1640 1681 1840 1886 2000 2050 2116 2300 2645 2875 3280 3362 3680 3772 4000 4100 4232 4600 4715 5125 5290 5750 6560 6724 7544 8200 8405 8464 9200 9430 10250 10580 11500 12167 13225 13448 15088 16400 16810 16928 18400 18860 20500 21160 21689 23000 23575 24334 26450 26896 30176 32800 33620 37720 38663 41000 42025 42320 43378 46000 47150 48668 52900 53792 60835 66125 67240 75440 77326 82000 84050 84640 86756 92000 94300 97336 105800 108445 117875 121670 132250 134480 150880 154652 164000 168100 173512 188600 193315 194672 210125 211600 216890 235750 243340 264500 268960 304175 309304 336200 347024 377200 386630 389344 420250 423200 433780 471500 486680 498847 529000 542225 608350 618608 672400 694048 754400 773260 840500 867560 889249 943000 966575 973360 997694 1058000 1084450 1216700 1237216 1344800 1520875 1546520 1681000 1735120 1778498 1886000 1933150 1946720 1995388 2116000 2168900 2433400 2494235 2711125 3041750 3093040 3362000 3470240 3556996 3772000 3866300 3990776 4337800 4446245 4832875 4866800 4988470 5422250 6083500 6186080 6724000 7113992 7732600 7981552 8675600 8892490 9665750 9733600 9976940 10844500 12167000 12471175 14227984 15465200 15963104 17351200 17784980 19331500 19953880 20452727 21689000 22231225 24334000 24942350 28455968 30930400 35569960 38663000 39907760 40905454 43378000 44462450 48668000 49884700 62355875 71139920 77326000 79815520 81810908 86756000 88924900 99769400 102263635 111156125 124711750 142279840 154652000 163621816 177849800 199538800 204527270 222312250 249423500 327243632 355699600 399077600 409054540 444624500 498847000 511318175 654487264 711399200 818109080 889249000 997694000 1022636350 1636218160 1778498000 1995388000 2045272700 2556590875 3272436320 3556996000 4090545400 5113181750 8181090800 10226363500 16362181600 20452727000 40905454000 81810908000
• Sum of all divisors σ(n): 215395951680
• Sum of proper divisors (its aliquot sum) s(n): 133585043680
• 81810908000 is an abundant number, because the sum of its proper divisors (133585043680) is greater than itself. Its abundance is 51774135680

Bases of 81810908000

• Binary: 1001100001100010011110110001101100000₂
• Hexadecimal: 0x130C4F6360
• Base-36: 11L03OM8

Squares and roots of 81810908000

• 81810908000 squared (81810908000²) is 6693024667784464000000
• 81810908000 cubed (81810908000³) is 547562425337845348133312000000000
• The square root of 81810908000 is 286026.0617496245
• The cube root of 81810908000 is 4341.1394574429

Scales and comparisons

• 81,810,908,000 seconds is equal to 2,601 years, 17 weeks, 2 days, 12 hours, 13 minutes, 20 seconds.
• To count from 1 to 81,810,908,000 would take you about five thousand, two hundred 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 81810908000 cubic inches would be around 361.8 feet tall.

Recreational maths with 81810908000

• 81810908000 backwards is 00080901818
• The number of decimal digits it has is: 11
• The sum of 81810908000's digits is 35
• More coming soon!