129138172164

Names of 129138172164

• Cardinal: 129138172164 can be written as One hundred twenty-nine billion, one hundred thirty-eight million, one hundred seventy-two thousand, one hundred sixty-four.

Scientific notation

• Scientific notation: 1.29138172164 × 10¹¹

Factors of 129138172164

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 699

Divisors of 129138172164

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 101 202 303 404 593 606 909 1186 1212 1779 1818 2372 3558 3636 5337 7116 10201 10674 20402 21348 30603 40804 59893 61206 91809 119786 122412 179679 183618 239572 351649 359358 367236 539037 703298 718716 1054947 1078074 1406596 2109894 2156148 3164841 4219788 6049193 6329682 12098386 12659364 18147579 24196772 35516549 36295158 54442737 71033098 72590316 106549647 108885474 142066196 213099294 217770948 319648941 426198588 639297882 1278595764 3587171449 7174342898 10761514347 14348685796 21523028694 32284543041 43046057388 64569086082 129138172164
• Sum of all divisors σ(n): 330253526239
• Sum of proper divisors (its aliquot sum) s(n): 201115354075
• 129138172164 is an abundant number, because the sum of its proper divisors (201115354075) is greater than itself. Its abundance is 71977181911

Bases of 129138172164

• Binary: 1111000010001001111000010000100000100₂
• Hexadecimal: 0x1E113C2104
• Base-36: 1NBPJ7D0

Squares and roots of 129138172164

• 129138172164 squared (129138172164²) is 16676667509858904442896
• 129138172164 cubed (129138172164³) is 2153594360009944369295128154746944
• 129138172164 is a perfect square number. Its square root is 359358
• The cube root of 129138172164 is 5054.5777158125

Scales and comparisons

• 129,138,172,164 seconds is equal to 4,106 years, 10 weeks, 18 hours, 29 minutes, 24 seconds.
• To count from 1 to 129,138,172,164 would take you about eight thousand, two hundred twelve 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 129138172164 cubic inches would be around 421.2 feet tall.

Recreational maths with 129138172164

• 129138172164 backwards is 461271831921
• The number of decimal digits it has is: 12
• The sum of 129138172164's digits is 45
• More coming soon!