21003978522858939

Names of 21003978522858939

• Cardinal: 21003978522858939 can be written as Twenty-one quadrillion, three trillion, nine hundred seventy-eight billion, five hundred twenty-two million, eight hundred fifty-eight thousand, nine hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1003978522858939 × 10¹⁶

Factors of 21003978522858939

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 82

Divisors of 21003978522858939

• Number of divisors d(n): 408
• Complete list of divisors:
  1 3 9 17 19 27 43 51 57 81 129 153 171 243 323 361 387 459 513 729 731 817 969 1083 1161 1377 1539 1849 2187 2193 2451 2907 3249 3483 4131 4617 5547 6137 6561 6579 7353 8721 9747 10449 12393 13851 13889 15523 16641 18411 19683 19737 22059 26163 29241 31347 31433 35131 37179 41553 41667 46569 49923 55233 59049 59211 66177 78489 79507 87723 94041 94299 105393 111537 124659 125001 139707 149769 165699 177147 177633 198531 235467 238521 263169 263891 282123 282897 316179 334611 373977 375003 419121 449307 497097 531441 532899 595593 597227 667489 706401 715563 789507 791673 846369 848691 948537 1003833 1121931 1125009 1257363 1347921 1351619 1491291 1510633 1594323 1598697 1786779 1791681 2002467 2119203 2146689 2368521 2375019 2539107 2546073 2845611 3011499 3365793 3375027 3772089 4043763 4054857 4473873 4531899 4782969 4796091 5360337 5375043 6007401 6357609 6440067 7105563 7125057 7617321 7638219 8536833 9034497 10097379 10125081 11316267 11347313 12131289 12164571 13421619 13595697 14348907 14388273 16081011 16125129 18022203 19072827 19320201 21316689 21375171 22851963 22914657 25610499 25680761 27103491 28702027 30292137 30375243 33948801 34041939 36393867 36493713 40264857 40787091 43046721 43164819 48243033 48375387 54066609 57218481 57960603 63950067 64125513 68555889 68743971 76831497 77042283 81310473 86106081 90876411 91125729 101846403 102125817 109181601 109481139 120794571 122361273 129494457 144729099 145126161 162199827 171655443 173881809 191850201 192376539 205667667 206231913 230494491 231126849 243931419 258318243 272629233 273377187 305539209 306377451 327544803 328443417 362383713 367083819 388483371 434187297 435378483 486599481 487934459 514966329 521645427 575550603 577129617 617003001 618695739 691483473 693380547 731794257 774954729 817887699 820131561 916617627 919132353 982634409 985330251 1087151139 1101251457 1165450113 1302561891 1306135449 1459798443 1463803377 1544898987 1564936281 1726651809 1731388851 1851009003 1856087217 2074450419 2080141641 2324864187 2460394683 2749852881 2757397059 2947903227 2955990753 3261453417 3303754371 3496350339 3907685673 3918406347 4379395329 4391410131 4634696961 4694808843 5179955427 5194166553 5568261651 6223351257 6240424923 6974592561 7381184049 8249558643 8272191177 8843709681 8867972259 9784360251 9911263113 10489051017 11723057019 11755219041 13138185987 13174230393 13904090883 14084426529 15539866281 15582499659 16704784953 18670053771 18721274769 20923777683 22143552147 24748675929 24816573531 26531129043 26603916777 29353080753 29733789339 31467153051 35169171057 35265657123 39414557961 39522691179 42253279587 46747498977 50114354859 56010161313 56163824307 62771333049 66430656441 74246027787 74449720593 79593387129 79811750331 88059242259 89201368017 105796971369 118243673883 118568073537 126759838761 140242496931 150343064577 168030483939 168491472921 188313999147 199291969323 222738083361 223349161779 239435250993 264177726777 267604104051 317390914107 354731021649 355704220611 380279516283 420727490793 451029193731 504091451817 505474418763 564941997441 597875907969 668214250083 670047485337 718305752979 802812312153 952172742321 1064193064947 1067112661833 1140838548849 1262182472379 1353087581193 1512274355451 1516423256289 1694825992323 2010142456011 2154917258937 2408436936459 2856518226963 3192579194841 3201337985499 3422515646547 3786547417137 4549269768867 5084477976969 6030427368033 6464751776811 7225310809377 8569554680889 9577737584523 9604013956497 11359642251411 13647809306601 15253433930907 18091282104099 19394255330433 21675932428131 25708664042667 28733212753569 28812041869491 40943427919803 45760301792721 54273846312297 58182765991299 65027797284393 86436125608473 122830283759409 137280905378163 162821538936891 259308376825419 368490851278227 411842716134489 488464616810673 777925130476257 1105472553834681 1235528148403467 2333775391428771 7001326174286313 21003978522858939
• Sum of all divisors σ(n): 36045679501537200
• Sum of proper divisors (its aliquot sum) s(n): 15041700978678261
• 21003978522858939 is a deficient number, because the sum of its proper divisors (15041700978678261) is less than itself. Its deficiency is 5962277544180678

Bases of 21003978522858939

• Binary: 1001010100111110000000111010110101110011001010110111011₂
• Hexadecimal: 0x4A9F01D6B995BB
• Base-36: 5QTAEIXUSOR

Squares and roots of 21003978522858939

• 21003978522858939 squared (21003978522858939²) is 441167113788719577100154092205721
• 21003978522858939 cubed (21003978522858939³) is 9266264583009931682843128600414200745329451790019
• The square root of 21003978522858939 is 144927494.0197992211
• The cube root of 21003978522858939 is 275909.8394631909

Scales and comparisons

• 21,003,978,522,858,939 seconds is equal to 667,861,547 years, 23 weeks, 4 days, 19 hours, 55 minutes, 39 seconds.
• To count from 1 to 21,003,978,522,858,939 would take you about two billion, three million, five hundred eighty-four thousand, six hundred forty-two 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 21003978522858939 cubic inches would be around 22992.5 feet tall.

Recreational maths with 21003978522858939

• 21003978522858939 backwards is 93985822587930012
• 21003978522858939 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21003978522858939's digits is 81
• More coming soon!