81429994397752

Names of 81429994397752

• Cardinal: 81429994397752 can be written as Eighty-one trillion, four hundred twenty-nine billion, nine hundred ninety-four million, three hundred ninety-seven thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 8.1429994397752 × 10¹³

Factors of 81429994397752

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 16272

Divisors of 81429994397752

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 7 8 11 13 14 17 22 26 28 34 44 52 56 68 77 88 91 104 119 121 136 143 154 182 187 221 238 242 286 308 364 374 442 476 484 572 616 728 748 847 884 952 968 1001 1144 1309 1496 1547 1573 1694 1768 2002 2057 2431 2618 3094 3146 3388 4004 4114 4733 4862 5236 6188 6292 6776 8008 8228 9466 9724 10472 11011 11489 12376 12584 14399 16456 17017 18932 19448 22022 22978 26741 28798 33131 34034 37864 44044 45956 52063 53482 57596 61529 66262 68068 80423 80461 88088 91912 104126 106964 115192 123058 126379 132524 136136 149357 160846 160922 187187 195313 208252 213928 246116 252758 265048 298714 321692 321844 364441 374374 390626 416504 430703 492232 505516 563227 572693 597428 643384 643688 676819 728882 748748 781252 861406 884653 885071 1011032 1045499 1045993 1126454 1145386 1194856 1353638 1367191 1390169 1457764 1497496 1562504 1642927 1722812 1769306 1770142 2090998 2091986 2148443 2252908 2290772 2539069 2707276 2734382 2780338 2915528 3285854 3445624 3538612 3540284 4008851 4181996 4183972 4296886 4505816 4581544 4737733 5078138 5414552 5468764 5560676 6195497 6571708 7077224 7080568 7321951 7445009 8017702 8363992 8367944 8593772 9475466 9731183 9735781 10156276 10937528 11121352 11500489 11505923 12390994 13143416 14643902 14890018 15039101 16035404 17187544 17773483 18072197 18950932 19462366 19471562 20312552 23000978 23011846 23632873 24781988 27929759 29287804 29780036 30078202 32070808 35546966 36144394 37901864 38924732 38943124 46001956 46023692 47265746 49563976 52115063 54377437 55859518 58575608 59560072 60156404 68150467 71093932 72288788 77849464 77886248 80541461 92003912 92047384 94531492 104230126 108754874 111719036 120312808 126505379 126565153 136300934 142187864 144577576 161082922 165430111 189062984 195508313 208460252 217509748 223438072 253010758 253130306 272601868 307227349 322165844 330860222 380642059 391016626 416920504 435019496 506021516 506260612 545203736 598151807 614454698 644331688 661720444 706906681 761284118 782033252 885956071 924416429 1012043032 1012521224 1196303614 1228909396 1323440888 1413813362 1522568236 1564066504 1771912142 1848832858 2150591443 2392607228 2457818792 2827626724 3045136472 3543824284 3697665716 4187062649 4301182886 4785214456 4948346767 5655253448 6470915003 6579669877 7087648568 7395331432 7775973491 8374125298 8602365772 9896693534 10168580719 12017413577 12941830006 13159339754 15551946982 16748250596 17204731544 19793387068 20337161438 24034827154 25883660012 26318679508 31103893964 33496501192 39586774136 40674322876 46057689139 48069654308 51767320024 52637359016 54431814437 62207787928 71180065033 81348645752 84121895039 85535708401 92115378278 96139308616 108863628874 111854387909 132191549347 142360130066 168243790078 171071416802 184230756556 217727257748 223708775818 264383098694 284720260132 336487580156 342142833604 368461513112 435454515496 447417551636 528766197388 569440520264 598749958807 672975160312 684285667208 782980715363 894835103272 925340845429 1057532394776 1197499917614 1454107042817 1565961430726 1850681690858 2394999835228 2908214085634 3131922861452 3701363381716 4789999670456 5816428171268 6263845722904 7402726763432 10178749299719 11632856342536 20357498599438 40714997198876 81429994397752
• Sum of all divisors σ(n): 218766949027200
• Sum of proper divisors (its aliquot sum) s(n): 137336954629448
• 81429994397752 is an abundant number, because the sum of its proper divisors (137336954629448) is greater than itself. Its abundance is 55906960231696

Bases of 81429994397752

• Binary: 10010100000111101100101111000111110000000111000₂
• Hexadecimal: 0x4A0F65E3E038
• Base-36: SV4F87CQG

Squares and roots of 81429994397752

• 81429994397752 squared (81429994397752²) is 6630843987617922105182653504
• 81429994397752 cubed (81429994397752³) is 539949588764094929080494596915409772523008
• The square root of 81429994397752 is 9023856.9579616011
• The cube root of 81429994397752 is 43343.9148960847

Scales and comparisons

• 81,429,994,397,752 seconds is equal to 2,589,221 years, 49 weeks, 15 minutes, 52 seconds.
• To count from 1 to 81,429,994,397,752 would take you about six million, four hundred seventy-three thousand and fifty-four 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 81429994397752 cubic inches would be around 3612 feet tall.

Recreational maths with 81429994397752

• 81429994397752 backwards is 25779349992418
• The number of decimal digits it has is: 14
• The sum of 81429994397752's digits is 79
• More coming soon!