81394437137013

Names of 81394437137013

• Cardinal: 81394437137013 can be written as Eighty-one trillion, three hundred ninety-four billion, four hundred thirty-seven million, one hundred thirty-seven thousand and thirteen.

Scientific notation

• Scientific notation: 8.1394437137013 × 10¹³

Factors of 81394437137013

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1412

Divisors of 81394437137013

• Number of divisors d(n): 576
• Complete list of divisors:
  1 3 7 9 11 13 21 33 39 61 63 77 91 97 99 117 121 127 143 183 231 273 291 363 381 427 429 549 671 679 693 793 819 847 873 889 1001 1067 1089 1093 1143 1261 1281 1287 1397 1573 1651 2013 2037 2379 2541 2667 3003 3201 3279 3783 3843 4191 4697 4719 4953 5551 5917 6039 6111 7137 7381 7469 7623 7651 7747 8001 8723 8827 9009 9603 9779 9837 11011 11349 11557 11737 12023 12319 12573 13871 14091 14157 14209 14859 15367 16653 17751 18161 22143 22407 22953 23241 26169 26481 29337 33033 34671 35211 36069 36957 41419 41613 42273 42627 46101 49959 51667 53253 54229 54483 61061 65087 66429 66673 67221 68859 69723 76921 78507 79443 82159 84161 85217 86233 88011 95953 97097 99099 99463 100711 104013 105633 106021 107569 108207 110871 124257 124839 127127 127881 132253 135509 138303 138811 152581 155001 156299 160147 162687 163449 183183 195261 199771 200019 230763 246477 252483 255651 258699 287859 291291 298389 302133 318063 322707 372771 381381 396759 406527 416433 455609 457743 465003 466711 468897 480441 488061 538447 549549 585783 596519 599313 600057 671671 692289 704977 715957 733403 739431 742147 751459 757449 766953 776097 846131 863577 866749 873873 895167 906399 925771 937387 948563 954189 968121 971677 1068067 1094093 1107821 1121029 1144143 1166231 1190277 1219581 1249299 1366827 1373229 1378273 1398397 1400133 1406691 1441323 1490599 1526921 1615341 1719289 1761617 1789557 1797939 1804543 2015013 2114931 2147871 2200209 2226441 2254377 2538393 2600247 2777313 2812161 2845689 2915031 3204201 3282279 3323463 3363087 3498693 4100481 4134819 4195191 4200399 4471797 4580763 4846023 5011699 5133821 5157867 5260213 5284851 5368671 5413629 5922917 6045039 6067243 6344793 6443613 6467281 6561709 6600627 6679323 6763131 7615179 7754747 7800741 8067433 8163617 8266049 8331939 8436483 8467471 8537067 8745093 9307441 9534239 9612603 9647911 9768967 9846837 9970389 10089261 10434193 10496079 10688447 12035023 12186031 12331319 12404457 12585573 12631801 12828541 13415391 13464667 13742289 15035097 15161003 15401463 15473601 15780639 15854553 16240887 16796131 17768751 18201729 19377787 19401843 19685127 19849973 23264241 24202299 24490851 24798147 25402413 27922323 28602717 28943733 29306901 31302579 32065341 36105069 36558093 36993957 37895403 38485623 40394001 45105291 45270967 45483009 46204389 47341917 50388393 53306253 54605187 56472031 57862343 58133361 58205529 59055381 59272297 59549919 65152087 66739673 68382769 69792723 71140091 72606897 73472553 74394441 76207239 83766969 84074653 85302217 85808151 86831199 87920703 89799787 90926539 93142181 93907737 94252669 96196023 104876629 106127021 107458637 108315207 109674279 110077123 110981871 113686209 115456869 117572917 121182003 135644509 135812901 136449027 138949811 148111337 151165179 166771033 169416093 173587029 174400083 175040671 177816891 178649757 195456261 200219019 205148307 213420273 218349703 252223959 255906651 269399361 272779617 279426543 282758007 314629887 318381063 322375911 330231369 352718751 406933527 407438703 416849433 444334011 497980637 500313099 508248279 520761087 525122013 533450673 586368783 588522571 600657057 615444921 636485773 640260819 651995267 655049109 734136403 752210459 756671877 767719953 770539861 782541001 808198083 818338851 821344687 838279629 848274021 924821183 943889661 955143189 967127733 990694107 1024563991 1036779359 1058156253 1167397231 1182045007 1210848353 1220800581 1225284697 1250548299 1333002033 1493941911 1500939297 1528447921 1575366039 1629224707 1765567713 1909457319 1925447381 1955985801 1965147327 2202409209 2256631377 2311619583 2347623003 2464034061 2774463549 3073691973 3110338077 3502191693 3546135021 3632545059 3675854091 4481825733 4585343763 4887674121 5296703139 5477787007 5728371957 5749412809 5776342143 5867957403 6473748281 6607227627 6769894131 6934858749 7042869009 7171947937 7392102183 8274315049 8323390647 8475938471 9034791557 9221075919 9331014231 10173033013 10506575079 10638405063 10677480931 10897635177 11027562273 11404572949 13319331883 13478131667 13756031289 14663022363 16433361021 17248238427 17329026429 19421244843 21179921191 21515843811 24822945147 25427815413 27104374671 30519099039 32032442793 34213718847 39957995649 40434395001 49300083063 51744715281 58263734529 63243540899 63539763573 64547531433 71211231091 74468835441 74742366517 76283446239 81313124013 91557297117 93235323181 96097328379 99382707127 102641156541 117452290241 119873986947 121303185003 148259448337 189730622697 190619290719 213633693273 224227099551 279705969543 298148121381 352356870723 444778345011 569191868091 640901079819 672681298653 695678949889 822166031687 839117908629 894444364143 1057070612169 1291975192651 1334335035033 2087036849667 2466498095061 3875925577953 6261110549001 7399494285183 9043826348557 11627776733859 27131479045671 81394437137013
• Sum of all divisors σ(n): 164762386087936
• Sum of proper divisors (its aliquot sum) s(n): 83367948950923
• 81394437137013 is an abundant number, because the sum of its proper divisors (83367948950923) is greater than itself. Its abundance is 1973511813910

Bases of 81394437137013

• Binary: 10010100000011100011110100000110010001001110101₂
• Hexadecimal: 0x4A071E832275
• Base-36: SUO36BUR9

Squares and roots of 81394437137013

• 81394437137013 squared (81394437137013²) is 6625054396851161012134562169
• 81394437137013 cubed (81394437137013³) is 539242573633793401454810979742846619461197
• The square root of 81394437137013 is 9021886.5619676797
• The cube root of 81394437137013 is 43337.6051193045

Scales and comparisons

• 81,394,437,137,013 seconds is equal to 2,588,091 years, 17 weeks, 1 day, 15 hours, 23 minutes, 33 seconds.
• To count from 1 to 81,394,437,137,013 would take you about six million, four hundred seventy thousand, two hundred twenty-eight 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 81394437137013 cubic inches would be around 3611.5 feet tall.

Recreational maths with 81394437137013

• 81394437137013 backwards is 31073173449318
• The number of decimal digits it has is: 14
• The sum of 81394437137013's digits is 54
• More coming soon!