81315172240302

Names of 81315172240302

• Cardinal: 81315172240302 can be written as Eighty-one trillion, three hundred fifteen billion, one hundred seventy-two million, two hundred forty thousand, three hundred two.

Scientific notation

• Scientific notation: 8.1315172240302 × 10¹³

Factors of 81315172240302

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 120

Divisors of 81315172240302

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 6 7 11 13 14 21 22 26 33 37 39 42 47 66 74 77 78 91 94 111 121 141 143 154 182 222 231 242 259 273 282 286 329 363 407 429 462 481 517 518 546 611 658 726 777 814 847 858 962 987 1001 1034 1221 1222 1331 1369 1443 1551 1554 1573 1694 1739 1833 1974 2002 2209 2442 2541 2662 2738 2849 2886 3003 3102 3146 3367 3478 3619 3666 3993 4107 4277 4418 4477 4719 5082 5217 5291 5687 5698 6006 6627 6721 6734 7238 7986 8214 8547 8554 8954 9317 9438 9583 10101 10434 10582 10857 11011 11374 12173 12831 13254 13431 13442 15059 15463 15873 17061 17094 17303 17797 18634 19129 19166 20163 20202 21714 22022 22607 24299 24346 25662 26862 27951 28717 28749 30118 30926 31339 31746 33033 34122 34606 35594 36519 37037 38258 39809 40326 45177 45214 46389 47047 48598 49247 50653 51909 53391 55902 57387 57434 57498 58201 62557 62678 64343 66066 67821 72897 73038 73931 74074 79618 81733 86151 90354 92778 94017 94094 98494 101306 103818 105413 106782 111111 114774 116402 119427 121121 124579 125114 128686 133903 135642 141141 145794 147741 147862 151959 158249 163466 165649 170093 172302 174603 187671 188034 193029 195767 201019 210419 210826 221793 222222 238854 242242 245199 248677 249158 267289 267806 282282 295482 303918 315887 316239 316498 331298 340186 344729 349206 354571 363363 373737 375342 386058 391534 401709 402038 407407 420838 437899 443586 450401 474747 490398 496947 497354 510279 517517 534578 557183 572131 587301 603057 631257 631774 632478 640211 658489 689458 707773 709142 726726 746031 747474 801867 803418 813241 814814 836459 875798 899063 900802 947661 949494 993894 1020558 1034187 1035034 1062529 1063713 1114366 1144262 1159543 1174602 1206114 1222221 1262514 1280422 1313697 1316978 1351203 1370369 1415546 1472933 1492062 1552551 1603734 1626482 1671549 1672918 1716393 1740739 1798126 1822139 1871023 1895322 1920633 1975467 2068374 2123319 2125058 2127426 2153437 2211209 2314609 2319086 2380691 2439723 2444442 2509377 2627394 2697189 2702406 2735447 2740738 2940179 2945866 3024121 3105102 3187587 3343098 3432786 3474757 3478629 3481478 3644278 3742046 3841266 3900281 3950934 4111107 4246638 4306874 4418799 4422418 4481477 4609423 4629218 4761382 4879446 4954411 5018754 5222217 5394378 5466417 5470894 5613069 5692687 5855213 5880358 6048242 6129013 6293441 6375174 6460311 6633627 6943827 6949514 6957258 7142073 7243379 7437703 7785503 7800562 8206341 8222214 8820537 8837598 8962954 9072363 9201049 9218846 9889693 9908822 10424271 10444434 10932834 11226138 11385374 11687819 11700843 11710426 12258026 12586882 12754973 12920622 13267254 13444431 13828269 13887654 14284146 14486758 14863233 14875406 15074059 15571006 16202263 16412682 16664837 17078061 17565639 17641074 18144726 18387039 18402098 18880323 19148129 19779386 20581253 20848542 21168847 21730137 22313109 23356509 23375638 23401686 23687807 24323299 25509946 26187601 26888862 27603147 27656538 29669079 29726466 30089917 30148118 30948983 32404526 33265331 33329674 34156122 35063457 35131278 36774078 37760646 38222327 38264919 38296258 39313573 41162506 42337694 42903091 43460274 44626218 45222177 46713018 47375614 48606789 48646598 49994511 50703653 52375202 54498521 55206294 57444387 59338158 60179834 61743759 61897966 63506541 64407343 66530662 67419143 69227851 70126914 71063421 72969897 76444654 76529838 78562803 78627146 79677169 81814733 85640533 85806182 90269751 90444354 92846949 97213578 99795993 99989022 101211539 101407306 108786623 108997042 111892477 114666981 114888774 117940719 123487518 127013082 128566009 128709273 128814686 134838286 138455702 142126842 145939794 152110959 157125606 159354338 163495563 163629466 165814649 171281066 180539502 183313207 185693898 193222029 199591986 202257429 202423078 207683553 210629419 216642881 217573246 223784954 229333962 232857317 235881438 239031507 245444199 256921599 257132018 257418546 267556289 275195011 288063611 303634617 304221918 326359869 326991126 331629298 335677431 340438813 365918641 366626414 385698027 386444058 404514858 415367106 421258838 432449303 433285762 465714634 471934001 478063014 490888398 497443947 513843198 535112578 549939621 550390022 557740183 576127222 599483731 607269234 631888257 649928643 652719738 671354862 680877626 698571951 708480773 731837282 761506361 771396054 783247339 802668867 825585033 864190833 864898606 876448859 899962063 943868002 994887894 1021316439 1097755923 1099879242 1113326929 1115480366 1198967462 1230817247 1263776514 1297347909 1299857286 1397143902 1414226099 1415802003 1416961546 1454602201 1523012722 1566494678 1605337734 1651170066 1673220549 1728381666 1752897718 1798451193 1799924126 2016445277 2042632878 2125442319 2195511846 2226653858 2284519083 2349742017 2383071691 2461634494 2561430487 2594695818 2629346577 2699886189 2828452198 2831604006 2909204402 3027145121 3168699721 3339980787 3346441098 3596902386 3692451741 3744826943 4025105051 4032890554 4242678297 4250884638 4363806603 4569038166 4699484034 4756942333 4766143382 5122860974 5258693154 5399772378 6049335831 6054290242 6135142013 6337399442 6679961574 7149215073 7384903482 7489653886 7684291461 7793288503 8050210102 8485356594 8615720729 8727613206 9081435363 9506099163 9513884666 9899582693 10182215407 11234480829 12075315153 12098671662 12270284026 13538989717 14270826999 14298430146 15368582922 15586577006 16000624211 17231441458 18162870726 18405426039 19012198326 19799165386 20364430814 22180898047 22468961658 23379865509 24150630306 25847162187 26213788601 27077979434 28175735357 28541653998 29698748079 30546646221 32001248422 33298596331 36810852078 40616969151 41193096373 44361796094 46759731018 48001872633 51694324374 52326365663 52427577202 56351470714 59397496158 61093292442 66542694141 66597192662 78641365803 81233938302 82386192746 84527206071 94772928019 96003745266 99895788993 104652731326 112004369477 123579289119 133085388282 148928886887 156979096989 157282731606 169054412142 176006866321 189545856038 199791577986 224008738954 247158578238 284318784057 288351674611 297857773774 313958193978 336013108431 352013732642 366284559641 446786660661 528020598963 568637568114 576703349222 672026216862 732569119282 865055023833 893573321322 1042502208209 1056041197926 1098853678923 1232048064247 1730110047666 1936075529531 2085004416418 2197707357846 2464096128494 3127506624627 3696144192741 3872151059062 5808226588593 6255013249254 7392288385482 11616453177186 13552528706717 27105057413434 40657586120151 81315172240302
• Sum of all divisors σ(n): 231193738782720
• Sum of proper divisors (its aliquot sum) s(n): 149878566542418
• 81315172240302 is an abundant number, because the sum of its proper divisors (149878566542418) is greater than itself. Its abundance is 68563394302116

Bases of 81315172240302

• Binary: 10010011111010010101001111101001100101110101110₂
• Hexadecimal: 0x49F4A9F4CBAE
• Base-36: STNOA210U

Squares and roots of 81315172240302

• 81315172240302 squared (81315172240302²) is 6612157236469980981633051204
• 81315172240302 cubed (81315172240302³) is 537668704563515784596429769386452558423608
• The square root of 81315172240302 is 9017492.5694619787
• The cube root of 81315172240302 is 43323.5326322481

Scales and comparisons

• 81,315,172,240,302 seconds is equal to 2,585,570 years, 49 weeks, 3 days, 20 hours, 31 minutes, 42 seconds.
• To count from 1 to 81,315,172,240,302 would take you about six million, four hundred sixty-three thousand, nine hundred twenty-seven 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 81315172240302 cubic inches would be around 3610.3 feet tall.

Recreational maths with 81315172240302

• 81315172240302 backwards is 20304227151318
• 81315172240302 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81315172240302's digits is 39
• More coming soon!