81121793332944

Names of 81121793332944

• Cardinal: 81121793332944 can be written as Eighty-one trillion, one hundred twenty-one billion, seven hundred ninety-three million, three hundred thirty-two thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 8.1121793332944 × 10¹³

Factors of 81121793332944

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 22792

Divisors of 81121793332944

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 39 42 48 52 56 78 84 91 104 112 156 157 168 182 208 273 312 314 336 364 471 546 624 628 728 942 1092 1099 1256 1456 1884 2041 2184 2198 2512 3297 3768 4082 4368 4396 6123 6594 7536 8164 8221 8792 12246 13188 14287 14389 16328 16442 17584 24492 24663 26376 28574 28778 32656 32884 42861 43167 48984 49326 52752 57148 57547 57556 65768 85722 86334 97968 98652 100723 106873 114296 115094 115112 131536 171444 172641 172668 187057 197304 201446 213746 228592 230188 230224 302169 320619 342888 345282 345336 374114 394608 402892 427492 460376 561171 604338 641238 685776 690564 690672 748111 748228 805784 854984 920752 1122342 1208676 1282476 1290697 1309399 1381128 1496222 1496456 1611568 1709968 2244333 2244684 2259073 2417352 2564952 2581394 2618798 2762256 2992444 2992912 3872091 3928197 4488666 4489368 4518146 4834704 5129904 5162788 5237596 5984888 6777219 7744182 7856394 8977332 8978736 9034879 9036292 10325576 10475192 11969776 13554438 15488364 15712788 15813511 16779061 17954664 18069758 18072584 20651152 20950384 27104637 27108876 29367949 30976728 31425576 31627022 33558122 35909328 36139516 36145168 47440533 50337183 54209274 54217752 58735898 61953456 62851152 63254044 67116244 72279032 88103847 94881066 100674366 108418548 108435504 117453427 117471796 118291969 126508088 134232488 144558064 176207694 189762132 201348732 205575643 216837096 234906854 234943592 236583938 253016176 268464976 352360281 352415388 354875907 379524264 402697464 411151286 433674192 469813708 469887184 473167876 616726929 704720562 704830776 709751814 759048528 805394928 822302572 828043783 939627416 946335752 1233453858 1409441124 1409661552 1419503628 1537795597 1644605144 1656087566 1879254832 1892671504 2466907716 2484131349 2818882248 2839007256 3075591194 3289210288 3312175132 4613386791 4933815432 4968262698 5637764496 5678014512 6151182388 6624350264 9226773582 9867630864 9936525396 10764569179 12302364776 13248700528 18453547164 18571839133 19873050792 21529138358 24604729552 32293707537 36907094328 37143678266 39746101584 43058276716 55715517399 64587415074 73814188656 74287356532 86116553432 111431034798 129174830148 130002873931 148574713064 172233106864 222862069596 241433908729 258349660296 260005747862 297149426128 390008621793 445724139192 482867817458 516699320592 520011495724 724301726187 780017243586 891448278384 965735634916 1040022991448 1448603452374 1560034487172 1690037361103 1931471269832 2080045982896 2897206904748 3120068974344 3380074722206 3862942539664 5070112083309 5794413809496 6240137948688 6760149444412 10140224166618 11588827618992 13520298888824 20280448333236 27040597777648 40560896666472 81121793332944
• Sum of all divisors σ(n): 259618156152320
• Sum of proper divisors (its aliquot sum) s(n): 178496362819376
• 81121793332944 is an abundant number, because the sum of its proper divisors (178496362819376) is greater than itself. Its abundance is 97374569486432

Bases of 81121793332944

• Binary: 10010011100011110100011101011001101011011010000₂
• Hexadecimal: 0x49C7A3ACD6D0
• Base-36: SR6U58X5C

Squares and roots of 81121793332944

• 81121793332944 squared (81121793332944²) is 6580745353552877608035707136
• 81121793332944 cubed (81121793332944³) is 533841864547648032866717053225055324688384
• The square root of 81121793332944 is 9006763.7546981325
• The cube root of 81121793332944 is 43289.1622222277

Scales and comparisons

• 81,121,793,332,944 seconds is equal to 2,579,422 years, 5 weeks, 2 days, 1 hour, 22 minutes, 24 seconds.
• To count from 1 to 81,121,793,332,944 would take you about six million, four hundred forty-eight thousand, five hundred fifty-five 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 81121793332944 cubic inches would be around 3607.4 feet tall.

Recreational maths with 81121793332944

• 81121793332944 backwards is 44923339712118
• The number of decimal digits it has is: 14
• The sum of 81121793332944's digits is 57
• More coming soon!