12987405905864

Names of 12987405905864

• Cardinal: 12987405905864 can be written as Twelve trillion, nine hundred eighty-seven billion, four hundred five million, nine hundred five thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 1.2987405905864 × 10¹³

Factors of 12987405905864

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 142

Divisors of 12987405905864

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 8 13 19 26 38 41 52 67 76 82 104 134 152 164 169 247 268 328 338 494 533 536 676 779 871 988 1066 1273 1352 1558 1681 1742 1976 2132 2546 2747 3116 3211 3362 3484 4264 4489 5092 5494 6232 6422 6724 6929 6968 8978 10127 10184 10988 11323 12844 13448 13858 16549 17956 20254 21853 21976 22646 25688 27716 31939 33098 35711 35912 40508 43706 45292 52193 55432 58357 63878 66196 71422 81016 85291 87412 90584 104386 112627 116714 127756 131651 132392 142844 170582 174824 184049 208772 215137 225254 233428 255512 263302 284089 285688 300763 341164 368098 415207 417544 430274 450508 464243 466856 526604 568178 601526 678509 682328 736196 758641 830414 860548 901016 928486 1053208 1108783 1136356 1203052 1357018 1464151 1472392 1517282 1660828 1721096 1856972 2139913 2217566 2272712 2392637 2406104 2714036 2928302 3034564 3321656 3496931 3713944 3909919 4279826 4435132 4785274 5397691 5428072 5714497 5856604 6069128 6993862 7546009 7819838 8559652 8820617 8870264 9570548 10795382 11428994 11713208 12331283 13987724 14414179 15092018 15639676 17119304 17641234 19033963 19141096 21590764 22857988 24662566 27818869 27975448 28828358 30184036 31104281 31279352 35282468 38067926 43181528 45460103 45715976 49325132 50828947 55637738 57656716 60368072 62208562 70564936 74288461 76135852 90920206 98098117 98650264 101657894 111275476 115313432 124417124 143374171 148576922 152271704 160306679 181840412 196196234 203315788 222550952 234294377 248834248 286748342 297153844 320613358 361645297 363680824 392392468 406631576 468588754 505582603 573496684 590981339 594307688 641226716 723290594 784784936 937177508 965749993 1011165206 1146993368 1181962678 1275275521 1282453432 1446581188 1863864223 1874355016 1931499986 2022330412 2083986827 2363925356 2550551042 2893162376 3045826901 3727728446 3862999972 4044660824 4167973654 4727850712 5101102084 6091653802 6572573839 7455456892 7725999944 8335947308 9606069457 10202204168 12183307604 13145147678 14910913784 16671894616 19212138914 24230234899 24366615208 26290295356 38424277828 39595749713 48460469798 52580590712 76848555656 79191499426 85443459907 96920939596 124878902941 158382998852 170886919814 193841879192 249757805882 316765997704 341773839628 499515611764 683547679256 999031223528 1623425738233 3246851476466 6493702952932 12987405905864
• Sum of all divisors σ(n): 28881043164000
• Sum of proper divisors (its aliquot sum) s(n): 15893637258136
• 12987405905864 is an abundant number, because the sum of its proper divisors (15893637258136) is greater than itself. Its abundance is 2906231352272

Bases of 12987405905864

• Binary: 10111100111111011101101101110010111111001000₂
• Hexadecimal: 0xBCFDDB72FC8
• Base-36: 4LQBY5GAW

Squares and roots of 12987405905864

• 12987405905864 squared (12987405905864²) is 168672712163671106429586496
• 12987405905864 cubed (12987405905864³) is 2190620978112560677430906960813821612544
• The square root of 12987405905864 is 3603804.3656480577
• The cube root of 12987405905864 is 23505.7513648171

Scales and comparisons

• 12,987,405,905,864 seconds is equal to 412,959 years, 17 weeks, 2 days, 23 hours, 37 minutes, 44 seconds.
• To count from 1 to 12,987,405,905,864 would take you about one million, thirty-two thousand, three hundred ninety-eight 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 12987405905864 cubic inches would be around 1958.8 feet tall.

Recreational maths with 12987405905864

• 12987405905864 backwards is 46850950478921
• The number of decimal digits it has is: 14
• The sum of 12987405905864's digits is 68
• More coming soon!