21155192338860864

Names of 21155192338860864

• Cardinal: 21155192338860864 can be written as Twenty-one quadrillion, one hundred fifty-five trillion, one hundred ninety-two billion, three hundred thirty-eight million, eight hundred sixty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1155192338860864 × 10¹⁶

Factors of 21155192338860864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 10911

Divisors of 21155192338860864

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 47 48 54 64 72 94 96 108 141 144 188 192 216 282 288 376 423 432 564 576 752 846 864 1128 1269 1504 1692 1728 2209 2256 2538 3008 3384 4418 4512 5076 6627 6768 8836 9024 10152 10859 13254 13536 17672 19881 20304 21718 26508 27072 32577 35344 39762 40608 43436 53016 59643 65154 70688 79524 81216 86872 97731 103823 106032 119286 130308 141376 159048 173744 195462 207646 212064 238572 260616 293193 311469 318096 347488 390924 415292 424128 477144 510373 521232 586386 622938 636192 694976 781848 830584 934407 954288 1020746 1042464 1172772 1245876 1272384 1531119 1563696 1661168 1868814 1908576 2041492 2084928 2345544 2491752 2803221 3062238 3127392 3322336 3737628 3817152 4082984 4593357 4691088 4983504 5606442 6124476 6254784 6644672 7475256 8165968 9186714 9382176 9967008 11212884 12248952 13780071 14950512 16331936 18373428 18764352 19934016 22425768 23987531 24497904 27560142 29901024 32663872 36746856 44851536 47975062 48995808 55120284 59802048 71962593 73493712 89703072 95950124 97991616 110240568 117917881 143925186 146987424 179406144 191900248 215887779 220481136 235835762 287850372 293974848 353753643 383800496 431775558 440962272 471671524 575700744 647663337 707507286 767600992 863551116 881924544 943343048 1061260929 1127413957 1151401488 1295326674 1415014572 1535201984 1727102232 1886686096 2122521858 2254827914 2302802976 2590653348 2830029144 3183782787 3382241871 3454204464 3773372192 4245043716 4509655828 4605605952 5181306696 5542140407 5660058288 6367565574 6764483742 6908408928 7546744384 8490087432 9019311656 10146725613 10362613392 11084280814 11320116576 12735131148 13528967484 13816817856 16626421221 16980174864 18038623312 20293451226 20725226784 22168561628 22640233152 25470262296 27057934968 30440176839 33252842442 33960349728 36077246624 40586902452 41450453568 44337123256 49879263663 50940524592 54115869936 60880353678 66505684884 67920699456 72154493248 81173804904 88674246512 99758527326 101881049184 108231739872 121760707356 133011369768 149637790989 162347609808 177348493024 199517054652 203762098368 216463479744 243521414712 260480599129 266022739536 299275581978 324695219616 354696986048 399034109304 487042829424 520961198258 532045479072 598551163956 649390439232 781441797387 798068218608 974085658848 1041922396516 1064090958144 1197102327912 1562883594774 1596136437216 1948171317696 2083844793032 2344325392161 2394204655824 3125767189548 3192272874432 4167689586064 4688650784322 4788409311648 6251534379096 7032976176483 8335379172128 9377301568644 9576818623296 12242588159063 12503068758192 14065952352966 16670758344256 18754603137288 24485176318126 25006137516384 28131904705932 36727764477189 37509206274576 48970352636252 50012275032768 56263809411864 73455528954378 75018412549152 97940705272504 110183293431567 112527618823728 146911057908756 150036825098304 195881410545008 220366586863134 225055237647456 293822115817512 330549880294701 391762821090016 440733173726268 450110475294912 587644231635024 661099760589402 783525642180032 881466347452536 1175288463270048 1322199521178804 1762932694905072 2350576926540096 2644399042357608 3525865389810144 5288798084715216 7051730779620288 10577596169430432 21155192338860864
• Sum of all divisors σ(n): 63550194694022400
• Sum of proper divisors (its aliquot sum) s(n): 42395002355161536
• 21155192338860864 is an abundant number, because the sum of its proper divisors (42395002355161536) is greater than itself. Its abundance is 21239810016300672

Bases of 21155192338860864

• Binary: 1001011001010001000100100001100100000110100101101000000₂
• Hexadecimal: 0x4B28890C834B40
• Base-36: 5SAW16ZOEO0

Squares and roots of 21155192338860864

• 21155192338860864 squared (21155192338860864²) is 447542162894197393238461150826496
• 21155192338860864 cubed (21155192338860864³) is 9467840535776545534615616689608185166732748652544
• The square root of 21155192338860864 is 145448246.2557072703
• The cube root of 21155192338860864 is 276570.3755404357

Scales and comparisons

• 21,155,192,338,860,864 seconds is equal to 672,669,679 years, 3 weeks, 4 days, 6 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,155,192,338,860,864 would take you about two billion, eighteen million, nine thousand and thirty-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 21155192338860864 cubic inches would be around 23047.5 feet tall.

Recreational maths with 21155192338860864

• 21155192338860864 backwards is 46806883329155112
• 21155192338860864 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21155192338860864's digits is 72
• More coming soon!