138130396761

Names of 138130396761

• Cardinal: 138130396761 can be written as One hundred thirty-eight billion, one hundred thirty million, three hundred ninety-six thousand, seven hundred sixty-one.

Scientific notation

• Scientific notation: 1.38130396761 × 10¹¹

Factors of 138130396761

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 173

Divisors of 138130396761

• Number of divisors d(n): 44
• Complete list of divisors:
  1 3 7 21 49 147 163 343 489 1029 1141 2401 3423 7203 7987 16807 23961 50421 55909 117649 167727 352947 391363 823543 1174089 2470629 2739541 5764801 8218623 17294403 19176787 40353607 57530361 121060821 134237509 282475249 402712527 847425747 939662563 2818987689 6577637941 19732913823 46043465587 138130396761
• Sum of all divisors σ(n): 216187723792
• Sum of proper divisors (its aliquot sum) s(n): 78057327031
• 138130396761 is a deficient number, because the sum of its proper divisors (78057327031) is less than itself. Its deficiency is 60073069730

Bases of 138130396761

• Binary: 10000000101001001101101001011001011001₂
• Hexadecimal: 0x2029369659
• Base-36: 1RGF9S9L

Squares and roots of 138130396761

• 138130396761 squared (138130396761²) is 19080006509351279291121
• 138130396761 cubed (138130396761³) is 2635528869339154865205466554459081
• The square root of 138130396761 is 371658.9791206449
• The cube root of 138130396761 is 5169.2763842387

Scales and comparisons

• 138,130,396,761 seconds is equal to 4,392 years, 6 weeks, 1 day, 10 hours, 39 minutes, 21 seconds.
• To count from 1 to 138,130,396,761 would take you about eight thousand, seven hundred eighty-four 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 138130396761 cubic inches would be around 430.8 feet tall.

Recreational maths with 138130396761

• 138130396761 backwards is 167693031831
• The number of decimal digits it has is: 12
• The sum of 138130396761's digits is 48
• More coming soon!