81423481089777456

Names of 81423481089777456

• Cardinal: 81423481089777456 can be written as Eighty-one quadrillion, four hundred twenty-three trillion, four hundred eighty-one billion, eighty-nine million, seven hundred seventy-seven thousand, four hundred fifty-six.

Scientific notation

• Scientific notation: 8.1423481089777456 × 10¹⁶

Factors of 81423481089777456

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 597516

Divisors of 81423481089777456

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 56 84 97 98 112 147 168 194 196 291 294 336 388 392 582 588 679 776 784 1164 1176 1358 1552 2037 2328 2352 2716 4074 4656 4753 5432 8148 9506 10864 14259 16296 19012 28518 32592 38024 57036 76048 114072 228144 597407 1194814 1792221 2389628 3584442 4181849 4779256 7168884 8363698 9558512 12545547 14337768 16727396 25091094 28675536 29272943 33454792 50182188 57948479 58545886 66909584 87818829 100364376 115896958 117091772 173845437 175637658 200728752 231793916 234183544 347690874 351275316 405639353 463587832 468367088 695381748 702550632 811278706 927175664 1216918059 1390763496 1405101264 1622557412 2433836118 2781526992 2839475471 3245114824 4867672236 5678950942 6490229648 8518426413 9735344472 11357901884 17036852826 19470688944 22715803768 34073705652 45431607536 68147411304 136294822608 356895123649 713790247298 1070685370947 1427580494596 2141370741894 2498265865543 2855160989192 4282741483788 4996531731086 5710321978384 7494797596629 8565482967576 9993063462172 14989595193258 17130965935152 17487861058801 19986126924344 29979190386516 34618826993953 34975722117602 39972253848688 52463583176403 59958380773032 69237653987906 69951444235204 103856480981859 104927166352806 119916761546064 138475307975812 139902888470408 207712961963718 209854332705612 242331788957671 276950615951624 279805776940816 415425923927436 419708665411224 484663577915342 553901231903248 726995366873013 830851847854872 839417330822448 969327155830684 1453990733746026 1661703695709744 1696322522703697 1938654311661368 2907981467492052 3392645045407394 3877308623322736 5088967568111091 5815962934984104 6785290090814788 10177935136222182 11631925869968208 13570580181629576 20355870272444364 27141160363259152 40711740544888728 81423481089777456
• Sum of all divisors σ(n): 247208817730225848
• Sum of proper divisors (its aliquot sum) s(n): 165785336640448392
• 81423481089777456 is an abundant number, because the sum of its proper divisors (165785336640448392) is greater than itself. Its abundance is 84361855550670936

Bases of 81423481089777456

• Binary: 100100001010001100011100110000010101110110101111100110000₂
• Hexadecimal: 0x121463982BB5F30
• Base-36: M9Q7QTOVCXC

Squares and roots of 81423481089777456

• 81423481089777456 squared (81423481089777456²) is 6629783272777346973748663605831936
• 81423481089777456 cubed (81423481089777456³) is 539820032940309204608736075617301932020593977634816
• The square root of 81423481089777456 is 285347999.9750785987
• The cube root of 81423481089777456 is 433427.5922121721

Scales and comparisons

• 81,423,481,089,777,456 seconds is equal to 2,589,014,839 years, 15 weeks, 1 day, 1 hour, 17 minutes, 36 seconds.
• To count from 1 to 81,423,481,089,777,456 would take you about seven billion, seven hundred sixty-seven million, forty-four thousand, five hundred seventeen 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 81423481089777456 cubic inches would be around 36119 feet tall.

Recreational maths with 81423481089777456

• 81423481089777456 backwards is 65477798018432418
• 81423481089777456 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81423481089777456's digits is 84
• More coming soon!