642445905809956498

Names of 642445905809956498

• Cardinal: 642445905809956498 can be written as Six hundred forty-two quadrillion, four hundred forty-five trillion, nine hundred five billion, eight hundred nine million, nine hundred fifty-six thousand, four hundred ninety-eight.

Scientific notation

• Scientific notation: 6.42445905809956498 × 10¹⁷

Factors of 642445905809956498

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 566

Divisors of 642445905809956498

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 17 19 34 37 38 74 289 323 361 491 578 629 646 703 722 982 1258 1369 1406 2738 5491 6137 6859 8347 9329 10693 10982 11951 12274 13357 13718 16694 18167 18658 21386 23273 23902 26011 26714 36334 46546 52022 104329 116603 141899 158593 177251 203167 208658 227069 233206 241081 253783 283798 308839 317186 345173 354502 395641 406334 442187 454138 482162 494209 507566 617678 672179 690346 791282 884374 988418 1344358 1982251 2696081 3013267 3367769 3860173 3964502 4098377 4314311 4580539 5250263 5392162 5867941 6026534 6558287 6735538 7517179 7720346 8196754 8401553 8628622 8919997 9161078 9389971 10500526 11427043 11735882 12771401 13116574 15034358 16803106 17839994 18779942 22854086 25542802 51225539 57252073 69672409 73343287 77869163 87030241 99754997 102451078 111490879 114504146 118370771 124607453 139344818 142826401 146686574 151639949 155738326 159629507 169479943 174060482 194259731 199509994 217113817 222981758 236741542 242656619 249214906 285652802 303279898 319259014 330039889 338959886 388519462 434227634 485313238 660079778 973285241 1323775771 1479514097 1653574579 1895344943 1946570482 2012303107 2118326701 2249044649 2577879133 2647551542 2713701619 2881159031 2959028194 3220118917 3307149158 3690934889 3790689886 4024606214 4125162523 4236653402 4379718527 4498089298 4610475761 5155758266 5427403238 5610678113 5762318062 6270757891 6440237834 7381869778 8250325046 8759437054 9220951522 11221356226 12541515782 25151739649 28110767843 34209152819 36011553917 38233759033 42731848331 48979703527 50303479298 54742021589 56221535686 61182259423 68418305638 70127762891 72023107834 74455214959 76467518066 78378087937 83214652013 85463696662 95381527921 97959407054 106602884147 109484043178 119144399929 122364518846 140255525782 148910429918 156756175874 162049585499 166429304026 190763055842 213205768294 238288799858 324099170998 477883053331 649973903561 726441421627 811905118289 930614367013 955766106662 1040098410191 1265738654303 1299947807122 1332427494929 1414649084221 1452882843254 1581078388247 1623810236578 1812249030499 1861228734026 2025454798793 2080196820382 2263743598651 2531477308606 2664854989858 2754842953483 2829298168442 3078942124481 3162156776494 3624498060998 4050909597586 4527487197302 5509685906966 6157884248962 12349504167659 13802387010913 17681672973247 24049034431757 24699008335318 26878332600199 27604774021826 30040489376693 34432731579481 35363345946494 38483641177067 46832330209211 48098068863514 52342016116177 53756665200398 58499900365139 60080978753386 68865463158962 76967282354134 93664660418422 104684032232354 116999800730278 234640579185521 456931654203383 469281158371042 510688319403781 654221900010139 889814273975009 913863308406766 994498306207363 1021376638807562 1111498106937641 1308443800020278 1779628547950018 1988996612414726 2222996213875282 8681701429864277 16906471205525171 17363402859728554 18895467817939897 33812942411050342 37790935635879794 321222952904978249 642445905809956498
• Sum of all divisors σ(n): 1112812978980064320
• Sum of proper divisors (its aliquot sum) s(n): 470367073170107822
• 642445905809956498 is a deficient number, because the sum of its proper divisors (470367073170107822) is less than itself. Its deficiency is 172078832639848676

Bases of 642445905809956498

• Binary: 100011101010011011010010010111000011001101001101111010010010₂
• Hexadecimal: 0x8EA6D25C334DE92
• Base-36: 4VPS2EQHIGSY

Squares and roots of 642445905809956498

• 642445905809956498 squared (642445905809956498²) is 412736741891975496392510908652424004
• 642445905809956498 cubed (642445905809956498³) is 265161030005840416076465273291468638692418865490977992
• The square root of 642445905809956498 is 801527233.3551471401
• The cube root of 642445905809956498 is 862870.3021837257

Scales and comparisons

• 642,445,905,809,956,498 seconds is equal to 20,427,792,589 years, 4 weeks, 6 days, 1 hour, 14 minutes, 58 seconds.
• To count from 1 to 642,445,905,809,956,498 would take you about sixty-one billion, two hundred eighty-three million, three hundred seventy-seven thousand, seven hundred sixty-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 642445905809956498 cubic inches would be around 71905.9 feet tall.

Recreational maths with 642445905809956498

• 642445905809956498 backwards is 894659908509544246
• The number of decimal digits it has is: 18
• The sum of 642445905809956498's digits is 97
• More coming soon!