138655787797840

Names of 138655787797840

• Cardinal: 138655787797840 can be written as One hundred thirty-eight trillion, six hundred fifty-five billion, seven hundred eighty-seven million, seven hundred ninety-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3865578779784 × 10¹⁴

Factors of 138655787797840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 965

Divisors of 138655787797840

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 137 274 548 685 821 1096 1370 1642 2192 2740 3284 4105 5480 6568 8210 10960 13136 16420 18769 32840 37538 65680 75076 93845 112477 150152 187690 224954 300304 375380 449908 562385 674041 750760 899816 1124770 1348082 1501520 1799632 2249540 2571353 2696164 3370205 4499080 5142706 5392328 6740410 8998160 10285412 10784656 12856765 13480820 15409349 20570824 25713530 26961640 30818698 41141648 51427060 53923280 61637396 77046745 92343617 102854120 123274792 154093490 184687234 205708240 246549584 308186980 369374468 461718085 616373960 738748936 923436170 1232747920 1477497872 1846872340 2111080813 3693744680 4222161626 7387489360 8444323252 10555404065 12651075529 16888646504 21110808130 25302151058 33777293008 42221616260 50604302116 63255377645 84443232520 101208604232 126510755290 168886465040 202417208464 253021510580 506043021160 1012086042320 1733197347473 3466394694946 6932789389892 8665986737365 13865578779784 17331973474730 27731157559568 34663946949460 69327893898920 138655787797840
• Sum of all divisors σ(n): 325141137994680
• Sum of proper divisors (its aliquot sum) s(n): 186485350196840
• 138655787797840 is an abundant number, because the sum of its proper divisors (186485350196840) is greater than itself. Its abundance is 47829562399000

Bases of 138655787797840

• Binary: 11111100001101101010000111110100100110101010000₂
• Hexadecimal: 0x7E1B50FA4D50
• Base-36: 1D5DL82GR4

Squares and roots of 138655787797840

• 138655787797840 squared (138655787797840²) is 19225427489839635836708665600
• 138655787797840 cubed (138655787797840³) is 2665716794353964279225898574447468962304000
• The square root of 138655787797840 is 11775219.2250437529
• The cube root of 138655787797840 is 51758.2202377881

Scales and comparisons

• 138,655,787,797,840 seconds is equal to 4,408,825 years, 8 weeks, 2 days, 18 hours, 30 minutes, 40 seconds.
• To count from 1 to 138,655,787,797,840 would take you about eleven million, twenty-two thousand and sixty-two 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 138655787797840 cubic inches would be around 4313.2 feet tall.

Recreational maths with 138655787797840

• 138655787797840 backwards is 048797787556831
• The number of decimal digits it has is: 15
• The sum of 138655787797840's digits is 85
• More coming soon!