155138427297

Names of 155138427297

• Cardinal: 155138427297 can be written as One hundred fifty-five billion, one hundred thirty-eight million, four hundred twenty-seven thousand, two hundred ninety-seven.

Scientific notation

• Scientific notation: 1.55138427297 × 10¹¹

Factors of 155138427297

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4576

Divisors of 155138427297

• Number of divisors d(n): 54
• Complete list of divisors:
  1 3 7 9 17 21 49 51 63 119 147 153 357 441 833 1071 2499 4549 7497 13647 31843 40941 77333 95529 222901 231999 286587 541331 668703 695997 1623993 2006109 3789317 4871979 11367951 20693401 34103853 62080203 144853807 186240609 351787817 434561421 1013976649 1055363451 1303684263 2462514719 3041929947 3166090353 7387544157 9125789841 17237603033 22162632471 51712809099 155138427297
• Sum of all divisors σ(n): 276069270438
• Sum of proper divisors (its aliquot sum) s(n): 120930843141
• 155138427297 is a deficient number, because the sum of its proper divisors (120930843141) is less than itself. Its deficiency is 34207584156

Bases of 155138427297

• Binary: 10010000011110111110001000100110100001₂
• Hexadecimal: 0x241EF889A1
• Base-36: 1Z9PEWM9

Squares and roots of 155138427297

• 155138427297 squared (155138427297²) is 24067931624186554726209
• 155138427297 cubed (155138427297³) is 3733861060468032947156886686927073
• The square root of 155138427297 is 393876.1573096295
• The cube root of 155138427297 is 5373.2839928649

Scales and comparisons

• 155,138,427,297 seconds is equal to 4,932 years, 47 weeks, 6 days, 15 hours, 34 minutes, 57 seconds.
• To count from 1 to 155,138,427,297 would take you about nine thousand, eight hundred sixty-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 155138427297 cubic inches would be around 447.8 feet tall.

Recreational maths with 155138427297

• 155138427297 backwards is 792724831551
• The number of decimal digits it has is: 12
• The sum of 155138427297's digits is 54
• More coming soon!