138438027455

Names of 138438027455

• Cardinal: 138438027455 can be written as One hundred thirty-eight billion, four hundred thirty-eight million, twenty-seven thousand, four hundred fifty-five.

Scientific notation

• Scientific notation: 1.38438027455 × 10¹¹

Factors of 138438027455

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1921

Divisors of 138438027455

• Number of divisors d(n): 128
• Complete list of divisors:
  1 5 7 13 35 41 59 65 73 91 205 287 295 365 413 455 511 533 767 949 1435 1723 2065 2419 2555 2665 2993 3731 3835 4307 4745 5369 6643 8615 12061 12095 14965 16933 18655 20951 21535 22399 26845 30149 31447 33215 38909 55991 60305 70643 84665 101657 104755 111995 125779 150745 156793 157235 176587 194545 220129 272363 279955 353215 391937 494501 508285 628895 711599 783965 880453 882935 918359 1100645 1236109 1321541 1361815 1635127 1959685 2295631 2472505 3557995 4167937 4402265 4591795 5156939 6180545 6428513 6607705 7420961 8175635 9250787 11445889 11478155 16069417 20839685 25784695 29175559 32142565 36098573 37104805 46253935 51946727 54183181 57229445 67040207 80347085 96472493 145877795 180492865 259733635 270915905 304259401 335201035 379282267 469281449 482362465 675307451 1521297005 1896411335 2129815807 2346407245 3376537255 3955372213 10649079035 19776861065 27687605491 138438027455
• Sum of all divisors σ(n): 216042301440
• Sum of proper divisors (its aliquot sum) s(n): 77604273985
• 138438027455 is a deficient number, because the sum of its proper divisors (77604273985) is less than itself. Its deficiency is 60833753470

Bases of 138438027455

• Binary: 10000000111011100011001010100010111111₂
• Hexadecimal: 0x203B8CA8BF
• Base-36: 1RLIFDMN

Squares and roots of 138438027455

• 138438027455 squared (138438027455²) is 19165087445631333777025
• 138438027455 cubed (138438027455³) is 2653176901975786405232055798221375
• The square root of 138438027455 is 372072.6104606467
• The cube root of 138438027455 is 5173.1110434765

Scales and comparisons

• 138,438,027,455 seconds is equal to 4,401 years, 46 weeks, 5 days, 23 hours, 37 minutes, 35 seconds.
• To count from 1 to 138,438,027,455 would take you about eight thousand, eight hundred three 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 138438027455 cubic inches would be around 431.1 feet tall.

Recreational maths with 138438027455

• 138438027455 backwards is 554720834831
• The number of decimal digits it has is: 12
• The sum of 138438027455's digits is 50
• More coming soon!