138561656149

Names of 138561656149

• Cardinal: 138561656149 can be written as One hundred thirty-eight billion, five hundred sixty-one million, six hundred fifty-six thousand, one hundred forty-nine.

Scientific notation

• Scientific notation: 1.38561656149 × 10¹¹

Factors of 138561656149

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1029

Divisors of 138561656149

• Number of divisors d(n): 64
• Complete list of divisors:
  1 7 41 49 89 149 287 343 623 743 1043 2009 3649 4361 5201 6109 7301 13261 14063 25543 30463 30527 36407 42763 51107 66127 92827 110707 178801 213241 254849 299341 462889 543701 649789 774949 1251607 1492687 2095387 2711207 3240223 3805907 4538987 4548523 5424643 9852923 10448809 18978449 22681561 26641349 31772909 37972501 68970461 132849143 186489443 222410363 403969843 482793227 929944001 1556872541 2827788901 3379552589 19794522307 138561656149
• Sum of all divisors σ(n): 168739200000
• Sum of proper divisors (its aliquot sum) s(n): 30177543851
• 138561656149 is a deficient number, because the sum of its proper divisors (30177543851) is less than itself. Its deficiency is 108384112298

Bases of 138561656149

• Binary: 10000001000010111010110001010101010101₂
• Hexadecimal: 0x2042EB1555
• Base-36: 1RNK1651

Squares and roots of 138561656149

• 138561656149 squared (138561656149²) is 19199332554753709510201
• 138561656149 cubed (138561656149³) is 2660291315742085212534702169875949
• The square root of 138561656149 is 372238.7085580971
• The cube root of 138561656149 is 5174.6504920699

Scales and comparisons

• 138,561,656,149 seconds is equal to 4,405 years, 43 weeks, 1 day, 20 hours, 55 minutes, 49 seconds.
• To count from 1 to 138,561,656,149 would take you about eight thousand, eight hundred eleven 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 138561656149 cubic inches would be around 431.2 feet tall.

Recreational maths with 138561656149

• 138561656149 backwards is 941656165831
• The number of decimal digits it has is: 12
• The sum of 138561656149's digits is 55
• More coming soon!