21054615309

Names of 21054615309

• Cardinal: 21054615309 can be written as Twenty-one billion, fifty-four million, six hundred fifteen thousand, three hundred nine.

Scientific notation

• Scientific notation: 2.1054615309 × 10¹⁰

Factors of 21054615309

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 332

Divisors of 21054615309

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 13 21 27 31 37 39 63 91 93 111 117 189 217 241 259 273 279 333 351 403 481 651 723 777 819 837 961 999 1147 1209 1443 1687 1953 2169 2331 2457 2821 2883 3133 3367 3441 3627 4329 5061 5859 6507 6727 6993 7471 8029 8463 8649 8917 9399 10101 10323 10881 12493 12987 14911 15183 20181 21931 22413 24087 25389 25947 26751 28197 30303 30969 35557 37479 44733 45549 52297 60543 62419 65793 67239 72261 76167 80253 84591 87451 90909 97123 104377 106671 112437 115921 134199 156891 181629 187257 197379 201717 216783 231601 240759 248899 262353 276427 291369 313131 320013 337311 347763 402597 462241 470673 561771 592137 679861 694803 746697 787059 811447 829281 874107 939393 960039 1043289 1386723 1412019 1621207 1685313 1934989 2039583 2084409 2240091 2361177 2434341 2487843 2622321 2818179 3010813 3129867 3235687 3593551 4160169 4863621 5804967 6118749 6253227 6720273 7303023 7463529 8569237 9032439 9707061 10780653 12480507 14590863 17414901 18356247 21075691 21909069 25154857 25707711 27097317 29121183 32341959 43772589 52244703 59984659 63227073 75464571 77123133 81291951 87363549 97025877 111400081 179953977 189681219 226393713 231369399 334200243 539861931 569043657 679181139 779800567 1002600729 1619585793 2339401701 3007802187 7018205103 21054615309
• Sum of all divisors σ(n): 40909693440
• Sum of proper divisors (its aliquot sum) s(n): 19855078131
• 21054615309 is a deficient number, because the sum of its proper divisors (19855078131) is less than itself. Its deficiency is 1199537178

Bases of 21054615309

• Binary: 10011100110111100111110111100001101₂
• Hexadecimal: 0x4E6F3EF0D
• Base-36: 9O7DH59

Squares and roots of 21054615309

• 21054615309 squared (21054615309²) is 443296825809977165481
• 21054615309 cubed (21054615309³) is 9333444135129851553276688948629
• The square root of 21054615309 is 145102.0858189157
• The cube root of 21054615309 is 2761.3138439889

Scales and comparisons

• 21,054,615,309 seconds is equal to 669 years, 24 weeks, 3 days, 16 hours, 15 minutes, 9 seconds.
• To count from 1 to 21,054,615,309 would take you about one thousand, three hundred thirty-eight 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 21054615309 cubic inches would be around 230.1 feet tall.

Recreational maths with 21054615309

• 21054615309 backwards is 90351645012
• The number of decimal digits it has is: 11
• The sum of 21054615309's digits is 36
• More coming soon!