68121912720

Names of 68121912720

• Cardinal: 68121912720 can be written as Sixty-eight billion, one hundred twenty-one million, nine hundred twelve thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.812191272 × 10¹⁰

Factors of 68121912720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 418

Divisors of 68121912720

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 97 120 194 240 291 311 388 485 582 622 776 933 970 1164 1244 1455 1552 1555 1866 1940 2328 2488 2910 3110 3732 3880 4656 4665 4976 5820 6220 7464 7760 9330 9409 11640 12440 14928 18660 18818 23280 24880 28227 30167 37320 37636 47045 56454 60334 74640 75272 90501 94090 112908 120668 141135 150544 150835 181002 188180 225816 241336 282270 301670 362004 376360 451632 452505 482672 564540 603340 724008 752720 905010 912673 1129080 1206680 1448016 1810020 1825346 2258160 2413360 2738019 2926199 3620040 3650692 4563365 5476038 5852398 7240080 7301384 8778597 9126730 10952076 11704796 13690095 14602768 14630995 17557194 18253460 21904152 23409592 27380190 29261990 35114388 36506920 43808304 43892985 46819184 54760380 58523980 70228776 73013840 87785970 109520760 117047960 140457552 175571940 219041520 234095920 283841303 351143880 567682606 702287760 851523909 1135365212 1419206515 1703047818 2270730424 2838413030 3406095636 4257619545 4541460848 5676826060 6812191272 8515239090 11353652120 13624382544 17030478180 22707304240 34060956360 68121912720
• Sum of all divisors σ(n): 214063799040
• Sum of proper divisors (its aliquot sum) s(n): 145941886320
• 68121912720 is an abundant number, because the sum of its proper divisors (145941886320) is greater than itself. Its abundance is 77819973600

Bases of 68121912720

• Binary: 111111011100011000011110010110010000₂
• Hexadecimal: 0xFDC61E590
• Base-36: VAM109C

Squares and roots of 68121912720

• 68121912720 squared (68121912720²) is 4640594992631297798400
• 68121912720 cubed (68121912720³) is 316126207056898311762932955648000
• The square root of 68121912720 is 261001.7484998903
• The cube root of 68121912720 is 4084.0928891555

Scales and comparisons

• 68,121,912,720 seconds is equal to 2,166 years, 3 weeks, 3 days, 1 hour, 32 minutes.
• To count from 1 to 68,121,912,720 would take you about four thousand, three hundred thirty-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 68121912720 cubic inches would be around 340.3 feet tall.

Recreational maths with 68121912720

• 68121912720 backwards is 02721912186
• The number of decimal digits it has is: 11
• The sum of 68121912720's digits is 39
• More coming soon!