138639856355

Names of 138639856355

• Cardinal: 138639856355 can be written as One hundred thirty-eight billion, six hundred thirty-nine million, eight hundred fifty-six thousand, three hundred fifty-five.

Scientific notation

• Scientific notation: 1.38639856355 × 10¹¹

Factors of 138639856355

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 16525

Divisors of 138639856355

• Number of divisors d(n): 128
• Complete list of divisors:
  1 5 7 11 13 19 35 55 65 77 89 91 95 133 143 209 247 385 445 455 623 665 715 979 1001 1045 1157 1235 1463 1691 1729 2717 3115 4895 5005 5785 6853 7315 8099 8455 8645 11837 12727 13585 16381 18601 19019 21983 34265 40495 59185 63635 81905 89089 93005 95095 109915 114667 130207 153881 180191 212953 241813 311239 445445 573335 651035 769405 900955 1064765 1209065 1261337 1457909 1490671 1556195 1692691 2178673 2342483 3423629 4046107 6306685 7289545 7453355 8463455 10205363 10893365 11712415 16036999 16397381 17118145 18952817 20230535 23965403 27700271 28322749 44507177 51026815 80184995 81986905 94764085 112258993 119827015 132669719 138501355 141613745 193901897 208480987 222535885 304702981 311550239 360103523 561294965 663348595 969509485 1042404935 1459366909 1523514905 1557751195 1800517615 2132920867 2520724661 3961138753 7296834545 10664604335 12603623305 19805693765 27727971271 138639856355
• Sum of all divisors σ(n): 237788006400
• Sum of proper divisors (its aliquot sum) s(n): 99148150045
• 138639856355 is a deficient number, because the sum of its proper divisors (99148150045) is less than itself. Its deficiency is 39491706310

Bases of 138639856355

• Binary: 10000001000111100101000101001011100011₂
• Hexadecimal: 0x20479452E3
• Base-36: 1ROUL9SZ

Squares and roots of 138639856355

• 138639856355 squared (138639856355²) is 19221009770135033886025
• 138639856355 cubed (138639856355³) is 2664798033529572666911563441938875
• The square root of 138639856355 is 372343.7341422573
• The cube root of 138639856355 is 5175.6237835361

Scales and comparisons

• 138,639,856,355 seconds is equal to 4,408 years, 16 weeks, 3 days, 23 hours, 12 minutes, 35 seconds.
• To count from 1 to 138,639,856,355 would take you about eight thousand, eight hundred sixteen 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 138639856355 cubic inches would be around 431.3 feet tall.

Recreational maths with 138639856355

• 138639856355 backwards is 553658936831
• The number of decimal digits it has is: 12
• The sum of 138639856355's digits is 62
• More coming soon!