138799372985

Names of 138799372985

• Cardinal: 138799372985 can be written as One hundred thirty-eight billion, seven hundred ninety-nine million, three hundred seventy-two thousand, nine hundred eighty-five.

Scientific notation

• Scientific notation: 1.38799372985 × 10¹¹

Factors of 138799372985

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 105

Divisors of 138799372985

• Number of divisors d(n): 180
• Complete list of divisors:
  1 5 7 13 35 37 43 49 65 91 169 185 215 245 259 301 343 455 481 559 637 845 1183 1295 1505 1591 1715 1813 1849 2107 2401 2405 2795 3185 3367 3913 4459 5915 6253 7267 7955 8281 9065 9245 10535 11137 12005 12691 12943 14749 16835 19565 20683 22295 23569 24037 27391 31213 31265 36335 41405 43771 50869 55685 57967 63455 64715 68413 73745 77959 88837 90601 103243 103415 117845 120185 136955 144781 156065 164983 168259 191737 218855 254345 268879 289835 306397 312481 342065 356083 389795 405769 444185 453005 478891 516215 545713 634207 723905 824915 841295 889369 958685 1013467 1154881 1177813 1342159 1344395 1531985 1562405 1780415 1882153 2028845 2144779 2187367 2394455 2492581 2728565 3171035 3352237 3819991 4439449 4446845 5067335 5774405 5889065 6225583 6710795 7094269 8244691 9410765 10723895 10936835 11561797 12462905 13175071 15013453 15311569 16761185 17448067 19099955 22197245 23465659 31127915 35471345 41223455 43579081 49659883 57712837 57808985 65875355 75067265 76557845 80932579 87240335 92225497 107180983 117328295 164259613 217895405 248299415 288564185 305053567 404662895 461127485 535904915 566528053 645578479 750266881 821298065 1525267835 2135374969 2832640265 3227892395 3751334405 3965696371 10676874845 19828481855 27759874597 138799372985
• Sum of all divisors σ(n): 221232873132
• Sum of proper divisors (its aliquot sum) s(n): 82433500147
• 138799372985 is a deficient number, because the sum of its proper divisors (82433500147) is less than itself. Its deficiency is 56365872838

Bases of 138799372985

• Binary: 10000001010001000101100101101010111001₂
• Hexadecimal: 0x2051165AB9
• Base-36: 1RRHK9MH

Squares and roots of 138799372985

• 138799372985 squared (138799372985²) is 19265265941029147810225
• 138799372985 cubed (138799372985³) is 2674006833004121701668115771771625
• The square root of 138799372985 is 372557.8787047725
• The cube root of 138799372985 is 5177.6080172393

Scales and comparisons

• 138,799,372,985 seconds is equal to 4,413 years, 20 weeks, 2 days, 5 hours, 23 minutes, 5 seconds.
• To count from 1 to 138,799,372,985 would take you about eight thousand, eight hundred twenty-six 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 138799372985 cubic inches would be around 431.5 feet tall.

Recreational maths with 138799372985

• 138799372985 backwards is 589273997831
• The number of decimal digits it has is: 12
• The sum of 138799372985's digits is 71
• More coming soon!