138938454655

Names of 138938454655

• Cardinal: 138938454655 can be written as One hundred thirty-eight billion, nine hundred thirty-eight million, four hundred fifty-four thousand, six hundred fifty-five.

Scientific notation

• Scientific notation: 1.38938454655 × 10¹¹

Factors of 138938454655

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 774

Divisors of 138938454655

• Number of divisors d(n): 256
• Complete list of divisors:
  1 5 7 11 13 19 29 35 55 65 77 83 91 95 133 143 145 203 209 247 319 377 385 415 455 551 581 607 665 715 913 1001 1015 1045 1079 1235 1463 1577 1595 1729 1885 2233 2407 2639 2717 2755 2905 3035 3857 4147 4249 4565 5005 5395 6061 6391 6677 7163 7315 7553 7885 7891 8645 11039 11165 11533 11869 12035 13195 13585 16849 17347 17603 19019 19285 20501 20735 21245 26477 29029 30305 31291 31955 33385 35815 37765 39455 42427 45733 46739 50141 50381 55195 55237 57665 59345 78793 80731 83083 84245 86735 86801 88015 95095 102505 121429 123221 126863 132385 143507 145145 149929 156455 185339 193633 212135 219037 225511 228665 228839 233695 250705 251905 276185 320131 334457 344201 352667 393965 403655 415415 434005 503063 551551 554191 594529 607145 607607 616105 634315 654953 717535 749645 888041 926695 957239 968165 1049503 1095185 1127555 1144195 1355431 1461049 1578577 1600655 1601873 1649219 1672285 1721005 1763335 2341199 2409407 2515315 2517229 2757755 2770955 2972645 3038035 3274765 3521441 3679027 3879337 4161703 4347941 4440205 4584671 4786195 5247515 6539819 6700673 6777155 7204483 7305245 7892885 8009365 8246095 10227343 10529629 11544533 11705995 12047035 12444107 12586145 16071539 17607205 17620603 18395135 18993637 19396685 20808515 21739705 22923355 25753189 27759931 30435587 32699095 33503365 36022415 45778733 47827351 50431381 51136715 52648145 57722665 62220535 73707403 80357695 87108749 88103015 94968185 112500773 128765945 132955459 136885177 138799655 152177935 194319517 208930007 228893665 239136755 252156905 305359241 334791457 360879103 368537015 435543745 562503865 664777295 684425885 958196239 971597585 1044650035 1462510049 1526796205 1673957285 1804395515 2137514687 2526153721 3969670133 4790981195 7312550245 10687573435 12630768605 19848350665 27787690931 138938454655
• Sum of all divisors σ(n): 247106764800
• Sum of proper divisors (its aliquot sum) s(n): 108168310145
• 138938454655 is a deficient number, because the sum of its proper divisors (108168310145) is less than itself. Its deficiency is 30770144510

Bases of 138938454655

• Binary: 10000001011001011000001001001001111111₂
• Hexadecimal: 0x205960927F
• Base-36: 1RTSD9Q7

Squares and roots of 138938454655

• 138938454655 squared (138938454655²) is 19303894181919491169025
• 138938454655 cubed (138938454655³) is 2682053226459539544648252903061375
• The square root of 138938454655 is 372744.4897714787
• The cube root of 138938454655 is 5179.3368194257

Scales and comparisons

• 138,938,454,655 seconds is equal to 4,417 years, 42 weeks, 1 day, 23 hours, 10 minutes, 55 seconds.
• To count from 1 to 138,938,454,655 would take you about eight thousand, eight hundred thirty-five 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 138938454655 cubic inches would be around 431.6 feet tall.

Recreational maths with 138938454655

• 138938454655 backwards is 556454839831
• The number of decimal digits it has is: 12
• The sum of 138938454655's digits is 61
• More coming soon!