21018793867029

Names of 21018793867029

• Cardinal: 21018793867029 can be written as Twenty-one trillion, eighteen billion, seven hundred ninety-three million, eight hundred sixty-seven thousand and twenty-nine.

Scientific notation

• Scientific notation: 2.1018793867029 × 10¹³

Factors of 21018793867029

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 3617

Divisors of 21018793867029

• Number of divisors d(n): 168
• Complete list of divisors:
  1 3 7 9 17 19 21 27 51 57 63 81 119 133 153 171 189 243 323 357 399 459 513 567 729 969 1071 1197 1377 1539 1701 2261 2907 3213 3571 3591 4131 4617 5103 6783 8721 9639 10713 10773 12393 13851 20349 24997 26163 28917 32139 32319 60707 61047 67849 74991 78489 86751 96417 96957 182121 183141 203547 224973 235467 289251 424949 474943 546363 549423 610641 674919 867753 1153433 1274847 1424829 1639089 1648269 1831923 2024757 2603259 3460299 3824541 4274487 4917267 5495769 6074271 8074031 10380897 11473623 12752041 12823461 14751801 16487307 18222813 24222093 31142691 34420869 38256123 38470383 44255403 49461921 72666279 89264287 93428073 103262607 114768369 115411149 216784697 217998837 242288779 267792861 280284219 309787821 344305107 346233447 650354091 653996511 726866337 803378583 840852657 1032915321 1517492879 1696021453 1951062273 1961989533 2180599011 2410135749 3098745963 4118909243 4552478637 5088064359 5853186819 5885968599 6541797033 7230407247 9296237889 12356727729 13657435911 15264193077 17559560457 19625391099 21691221741 28832364701 37070183187 40972307733 45792579231 52678681371 58876173297 65073665223 86497094103 111210549561 122916923199 137377737693 158036044113 176628519891 259491282309 333631648683 368750769597 412133213079 778473846927 1000894946049 1106252308791 1236399639237 2335421540781 3002684838147 7006264622343 21018793867029
• Sum of all divisors σ(n): 40152628825920
• Sum of proper divisors (its aliquot sum) s(n): 19133834958891
• 21018793867029 is a deficient number, because the sum of its proper divisors (19133834958891) is less than itself. Its deficiency is 1884958908138

Bases of 21018793867029

• Binary: 100110001110111010001101111011111011100010101₂
• Hexadecimal: 0x131DD1BDF715
• Base-36: 7G7WF6GB9

Squares and roots of 21018793867029

• 21018793867029 squared (21018793867029²) is 441789695624655903733286841
• 21018793867029 cubed (21018793867029³) is 9285886544912126144547666878570869465389
• The square root of 21018793867029 is 4584625.8153778481
• The cube root of 21018793867029 is 27597.4696041121

Scales and comparisons

• 21,018,793,867,029 seconds is equal to 668,332 years, 32 weeks, 5 days, 3 hours, 57 minutes, 9 seconds.
• To count from 1 to 21,018,793,867,029 would take you about one million, six hundred seventy thousand, eight hundred thirty-one 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 21018793867029 cubic inches would be around 2299.8 feet tall.

Recreational maths with 21018793867029

• 21018793867029 backwards is 92076839781012
• 21018793867029 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21018793867029's digits is 63
• More coming soon!