81027635904

Names of 81027635904

• Cardinal: 81027635904 can be written as Eighty-one billion, twenty-seven million, six hundred thirty-five thousand, nine hundred four.

Scientific notation

• Scientific notation: 8.1027635904 × 10¹⁰

Factors of 81027635904

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 931

Divisors of 81027635904

• Number of divisors d(n): 210
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 32 36 38 48 54 57 64 72 76 81 96 108 114 144 152 162 171 192 216 228 288 304 324 342 432 456 513 576 608 648 684 864 907 912 1026 1216 1296 1368 1539 1728 1814 1824 2052 2592 2721 2736 3078 3628 3648 4104 5184 5442 5472 6156 7256 8163 8208 10884 10944 12312 14512 16326 16416 17233 21768 24489 24624 29024 32652 32832 34466 43536 48978 49248 51699 58048 65304 68932 73467 87072 97956 98496 103398 130608 137864 146934 155097 174144 195912 206796 261216 275728 293868 310194 391824 413592 465291 522432 551456 587736 620388 783648 822649 827184 930582 1102912 1175472 1240776 1395873 1567296 1645298 1654368 1861164 2350944 2467947 2481552 2791746 3290596 3308736 3722328 4701888 4935894 4963104 5583492 6581192 7403841 7444656 9871788 9926208 11166984 13162384 14807682 14889312 15630331 19743576 22211523 22333968 26324768 29615364 29778624 31260662 39487152 44423046 44667936 46890993 52649536 59230728 62521324 66634569 78974304 88846092 89335872 93781986 118461456 125042648 133269138 140672979 157948608 177692184 187563972 236922912 250085296 266538276 281345958 355384368 375127944 422018937 473845824 500170592 533076552 562691916 710768736 750255888 844037874 1000341184 1066153104 1125383832 1266056811 1421537472 1500511776 1688075748 2132306208 2250767664 2532113622 3001023552 3376151496 4264612416 4501535328 5064227244 6752302992 9003070656 10128454488 13504605984 20256908976 27009211968 40513817952 81027635904
• Sum of all divisors σ(n): 253112008380
• Sum of proper divisors (its aliquot sum) s(n): 172084372476
• 81027635904 is an abundant number, because the sum of its proper divisors (172084372476) is greater than itself. Its abundance is 91056736572

Bases of 81027635904

• Binary: 1001011011101100111111001101011000000₂
• Hexadecimal: 0x12DD9F9AC0
• Base-36: 1181RG00

Squares and roots of 81027635904

• 81027635904 squared (81027635904²) is 6565477780191189897216
• 81027635904 cubed (81027635904³) is 531985143109133878500141231243264
• The square root of 81027635904 is 284653.5366089801
• The cube root of 81027635904 is 4327.2407274479

Scales and comparisons

• 81,027,635,904 seconds is equal to 2,576 years, 22 weeks, 1 day, 20 hours, 38 minutes, 24 seconds.
• To count from 1 to 81,027,635,904 would take you about five thousand, one hundred fifty-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 81027635904 cubic inches would be around 360.6 feet tall.

Recreational maths with 81027635904

• 81027635904 backwards is 40953672018
• The number of decimal digits it has is: 11
• The sum of 81027635904's digits is 45
• More coming soon!