12805439664640

Names of 12805439664640

• Cardinal: 12805439664640 can be written as Twelve trillion, eight hundred five billion, four hundred thirty-nine million, six hundred sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.280543966464 × 10¹³

Factors of 12805439664640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 946

Divisors of 12805439664640

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 128 140 160 181 196 224 245 256 280 320 362 392 448 490 512 560 640 724 751 784 896 905 980 1120 1267 1280 1448 1502 1568 1792 1810 1960 2240 2534 2560 2896 3004 3136 3584 3620 3755 3920 4480 5068 5257 5792 6008 6272 6335 7240 7510 7840 8869 8960 10136 10514 11584 12016 12544 12670 14480 15020 15680 17738 17920 20272 21028 23168 24032 25088 25340 26285 28960 30040 31360 35476 36799 40544 42056 44345 46336 48064 50680 52570 57920 60080 62720 70952 73598 81088 84112 88690 92672 96128 101360 105140 115840 120160 125440 135931 141904 147196 162176 168224 177380 183995 192256 202720 210280 231680 240320 271862 283808 294392 324352 336448 354760 367990 384512 405440 420560 463360 480640 543724 564001 567616 588784 648704 672896 679655 709520 735980 810880 841120 951517 961280 1087448 1128002 1135232 1177568 1345792 1359310 1419040 1471960 1621760 1682240 1903034 1922560 2174896 2256004 2270464 2355136 2691584 2718620 2820005 2838080 2943920 3243520 3364480 3806068 3948007 4349792 4512008 4540928 4710272 4757585 5437240 5640010 5676160 5887840 6660619 6728960 7612136 7896014 8699584 9024016 9420544 9515170 10874480 11280020 11352320 11775680 13321238 13457920 15224272 15792028 17399168 18048032 18841088 19030340 19740035 21748960 22560040 22704640 23551360 26642476 27636049 30448544 31584056 33303095 34798336 36096064 38060680 39480070 43497920 45120080 47102720 53284952 55272098 60897088 63168112 66606190 69596672 72192128 76121360 78960140 86995840 90240160 94205440 102084181 106569904 110544196 121794176 126336224 133212380 138180245 144384256 152242720 157920280 173991680 180480320 204168362 213139808 221088392 243588352 252672448 266424760 276360490 288768512 304485440 315840560 347983360 360960640 408336724 426279616 442176784 487176704 505344896 510420905 532849520 552720980 608970880 631681120 714589267 721921280 816673448 852559232 884353568 1010689792 1020841810 1065699040 1105441960 1217941760 1263362240 1429178534 1443842560 1633346896 1705118464 1768707136 2021379584 2041683620 2131398080 2210883920 2435883520 2526724480 2858357068 3266693792 3410236928 3537414272 3572946335 4083367240 4262796160 4421767840 5002124869 5053448960 5716714136 6533387584 7074828544 7145892670 8166734480 8525592320 8843535680 10004249738 10106897920 11433428272 13066775168 14149657088 14291785340 16333468960 17051184640 17687071360 20008499476 22866856544 25010624345 26133550336 28583570680 32666937920 35374142720 40016998952 45733713088 50021248690 52267100672 57167141360 65333875840 70748285440 80033997904 91467426176 100042497380 114334282720 130667751680 160067995808 182934852352 200084994760 228668565440 261335503360 320135991616 365869704704 400169989520 457337130880 640271983232 800339979040 914674261760 1280543966464 1600679958080 1829348523520 2561087932928 3201359916160 6402719832320 12805439664640
• Sum of all divisors σ(n): 35960992903836
• Sum of proper divisors (its aliquot sum) s(n): 23155553239196
• 12805439664640 is an abundant number, because the sum of its proper divisors (23155553239196) is greater than itself. Its abundance is 10350113574556

Bases of 12805439664640

• Binary: 10111010010101111111101011101011001000000000₂
• Hexadecimal: 0xBA57FAEB200
• Base-36: 4JEQK5DZ4

Squares and roots of 12805439664640

• 12805439664640 squared (12805439664640²) is 163979285004735395666329600
• 12805439664640 cubed (12805439664640³) is 2099826840378945805893381422363705344000
• The square root of 12805439664640 is 3578468.8994931895
• The cube root of 12805439664640 is 23395.4551188829

Scales and comparisons

• 12,805,439,664,640 seconds is equal to 407,173 years, 19 weeks, 2 days, 5 hours, 30 minutes, 40 seconds.
• To count from 1 to 12,805,439,664,640 would take you about one million, seventeen thousand, nine hundred thirty-three 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 12805439664640 cubic inches would be around 1949.6 feet tall.

Recreational maths with 12805439664640

• 12805439664640 backwards is 04646693450821
• The number of decimal digits it has is: 14
• The sum of 12805439664640's digits is 58
• More coming soon!