81665240832

Names of 81665240832

• Cardinal: 81665240832 can be written as Eighty-one billion, six hundred sixty-five million, two hundred forty thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 8.1665240832 × 10¹⁰

Factors of 81665240832

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 2532

Divisors of 81665240832

• Number of divisors d(n): 486
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 17 18 21 24 28 32 34 36 42 48 49 51 56 63 64 68 72 84 96 98 102 112 119 126 128 136 144 147 153 168 192 196 204 224 238 252 256 272 288 289 294 306 336 357 384 392 408 441 448 476 504 544 576 578 588 612 672 714 768 784 816 833 867 882 896 952 1008 1071 1088 1152 1156 1176 1224 1344 1428 1568 1632 1666 1734 1764 1792 1904 2016 2023 2142 2176 2304 2312 2352 2448 2499 2503 2601 2688 2856 3136 3264 3332 3468 3528 3808 4032 4046 4284 4352 4624 4704 4896 4998 5006 5202 5376 5712 6069 6272 6528 6664 6936 7056 7497 7509 7616 8064 8092 8568 9248 9408 9792 9996 10012 10404 11424 12138 12544 13056 13328 13872 14112 14161 14994 15018 15232 16128 16184 17136 17521 18207 18496 18816 19584 19992 20024 20808 22527 22848 24276 26656 27744 28224 28322 29988 30036 30464 32368 34272 35042 36414 36992 37632 39168 39984 40048 41616 42483 42551 45054 45696 48552 52563 53312 55488 56448 56644 59976 60072 64736 68544 70084 72828 73984 79968 80096 83232 84966 85102 90108 91392 97104 105126 106624 110976 112896 113288 119952 120144 122647 127449 127653 129472 137088 140168 145656 157689 159936 160192 166464 169932 170204 180216 194208 210252 213248 221952 226576 239904 240288 245294 254898 255306 258944 274176 280336 291312 297857 315378 319872 320384 332928 339864 340408 360432 367941 382959 388416 420504 453152 479808 480576 490588 509796 510612 517888 560672 582624 595714 630756 639744 640768 665856 679728 680816 720864 723367 735882 765918 776832 841008 893571 906304 959616 961152 981176 1019592 1021224 1103823 1121344 1165248 1191428 1261512 1359456 1361632 1441728 1446734 1471764 1531836 1553664 1682016 1787142 1812608 1919232 1922304 1962352 2039184 2042448 2084999 2170101 2207646 2242688 2330496 2382856 2523024 2680713 2718912 2723264 2883456 2893468 2943528 3063672 3364032 3574284 3625216 3924704 4078368 4084896 4169998 4340202 4415292 4485376 4660992 4765712 5046048 5063569 5361426 5437824 5446528 5766912 5786936 5887056 6127344 6254997 6510303 6728064 7148568 7849408 8156736 8169792 8339996 8680404 8830584 9531424 10092096 10127138 10722852 10875648 10893056 11573872 11774112 12254688 12509994 13020606 13456128 14297136 15190707 15698816 16313472 16339584 16679992 17360808 17661168 18764991 19062848 20184192 20254276 21445704 23147744 23548224 24509376 25019988 26041212 28594272 30381414 31397632 32626944 32679168 33359984 34721616 35322336 35444983 37529982 38125696 40368384 40508552 42891408 45572121 46295488 47096448 49018752 50039976 52082424 57188544 60762828 66719968 69443232 70644672 70889966 75059964 76251392 81017104 85782816 91144242 92590976 94192896 98037504 100079952 104164848 106334949 114377088 121525656 133439936 138886464 141289344 141779932 150119928 162034208 171565632 182288484 185181952 200159904 208329696 212669898 228754176 243051312 266879872 277772928 282578688 283559864 300239856 319004847 324068416 343131264 364576968 400319808 416659392 425339796 486102624 533759744 555545856 567119728 600479712 638009694 648136832 686262528 729153936 800639616 833318784 850679592 972205248 1134239456 1200959424 1276019388 1296273664 1458307872 1601279232 1666637568 1701359184 1944410496 2268478912 2401918848 2552038776 2916615744 3402718368 3888820992 4536957824 4803837696 5104077552 5833231488 6805436736 9073915648 10208155104 11666462976 13610873472 20416310208 27221746944 40832620416 81665240832
• Sum of all divisors σ(n): 291079625928
• Sum of proper divisors (its aliquot sum) s(n): 209414385096
• 81665240832 is an abundant number, because the sum of its proper divisors (209414385096) is greater than itself. Its abundance is 127749144264

Bases of 81665240832

• Binary: 1001100000011101000001010111100000000₂
• Hexadecimal: 0x1303A0AF00
• Base-36: 11ILDJ40

Squares and roots of 81665240832

• 81665240832 squared (81665240832²) is 6669211560148560052224
• 81665240832 cubed (81665240832³) is 544642768219090610362887457210368
• The square root of 81665240832 is 285771.3086228217
• The cube root of 81665240832 is 4338.5614101233

Scales and comparisons

• 81,665,240,832 seconds is equal to 2,596 years, 36 weeks, 3 days, 13 hours, 7 minutes, 12 seconds.
• To count from 1 to 81,665,240,832 would take you about five thousand, one hundred ninety-three 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 81665240832 cubic inches would be around 361.5 feet tall.

Recreational maths with 81665240832

• 81665240832 backwards is 23804256618
• The number of decimal digits it has is: 11
• The sum of 81665240832's digits is 45
• More coming soon!