72139556385

Names of 72139556385

• Cardinal: 72139556385 can be written as Seventy-two billion, one hundred thirty-nine million, five hundred fifty-six thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 7.2139556385 × 10¹⁰

Factors of 72139556385

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5312

Divisors of 72139556385

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 9 13 15 39 45 65 117 137 181 195 411 543 585 685 905 1233 1629 1781 2055 2353 2715 4973 5343 6165 7059 8145 8905 11765 14919 16029 21177 24797 24865 26715 35295 44757 64649 74391 74595 80145 105885 123985 193947 223173 223785 322361 323245 371955 581841 681301 900113 967083 969735 1115865 1611805 2043903 2700339 2901249 2909205 3406505 4500565 4835415 6131709 8101017 8856913 10219515 11701469 13501695 14506245 26570739 30658545 35104407 40505085 44284565 58507345 79712217 105313221 123315481 132853695 175522035 369946443 398561085 526566105 616577405 1109839329 1603101253 1849732215 4809303759 5549196645 8015506265 14427911277 24046518795 72139556385
• Sum of all divisors σ(n): 136420266528
• Sum of proper divisors (its aliquot sum) s(n): 64280710143
• 72139556385 is a deficient number, because the sum of its proper divisors (64280710143) is less than itself. Its deficiency is 7858846242

Bases of 72139556385

• Binary: 1000011001011110110100100011000100001₂
• Hexadecimal: 0x10CBDA4621
• Base-36: X5211Y9

Squares and roots of 72139556385

• 72139556385 squared (72139556385²) is 5204115595424594268225
• 72139556385 cubed (72139556385³) is 375422590430190366228365201366625
• The square root of 72139556385 is 268588.0793799307
• The cube root of 72139556385 is 4162.8537722749

Scales and comparisons

• 72,139,556,385 seconds is equal to 2,293 years, 42 weeks, 2 days, 13 hours, 39 minutes, 45 seconds.
• To count from 1 to 72,139,556,385 would take you about four thousand, five hundred eighty-seven 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 72139556385 cubic inches would be around 346.9 feet tall.

Recreational maths with 72139556385

• 72139556385 backwards is 58365593127
• The number of decimal digits it has is: 11
• The sum of 72139556385's digits is 54
• More coming soon!