81979466400

Names of 81979466400

• Cardinal: 81979466400 can be written as Eighty-one billion, nine hundred seventy-nine million, four hundred sixty-six thousand, four hundred.

Scientific notation

• Scientific notation: 8.19794664 × 10¹⁰

Factors of 81979466400

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 869

Divisors of 81979466400

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 30 32 36 39 40 45 48 50 52 60 65 72 75 78 80 89 90 96 100 104 117 120 130 144 150 156 160 169 178 180 195 200 208 225 234 240 260 267 288 300 312 325 338 356 360 390 400 416 445 450 468 480 507 520 534 585 600 624 650 676 712 720 757 780 800 801 845 890 900 936 975 1014 1040 1068 1157 1170 1200 1248 1300 1335 1352 1424 1440 1514 1521 1560 1602 1690 1780 1800 1872 1950 2028 2080 2136 2225 2271 2314 2340 2400 2535 2600 2670 2704 2848 2925 3028 3042 3120 3204 3380 3471 3560 3600 3744 3785 3900 4005 4056 4225 4272 4450 4542 4628 4680 5070 5200 5340 5408 5785 5850 6056 6084 6240 6408 6675 6760 6813 6942 7120 7200 7570 7605 7800 8010 8112 8450 8544 8900 9084 9256 9360 9841 10140 10400 10413 10680 11355 11570 11700 12112 12168 12675 12816 13350 13520 13626 13884 14240 15041 15140 15210 15600 16020 16224 16900 17355 17800 18168 18512 18720 18925 19682 20025 20280 20826 21360 22710 23140 23400 24224 24336 25350 25632 26700 27040 27252 27768 28925 29523 30082 30280 30420 31200 32040 33800 34065 34710 35600 36336 37024 37850 38025 39364 40050 40560 41652 42720 45123 45420 46280 46800 48672 49205 50700 52065 53400 54504 55536 56775 57850 59046 60164 60560 60840 64080 67373 67600 68130 69420 71200 72672 75205 75700 76050 78728 80100 81120 83304 86775 88569 90246 90840 92560 93600 98410 101400 104130 106800 109008 111072 113550 115700 118092 120328 121120 121680 127933 128160 134746 135200 135369 136260 138840 147615 150410 151400 152100 157456 160200 166608 170325 173550 177138 180492 181680 185120 196820 202119 202800 208260 213600 218016 225615 227100 231400 236184 240656 243360 246025 255866 260325 269492 270738 272520 277680 295230 300820 302800 304200 314912 320400 333216 336865 340650 347100 354276 360984 363360 376025 383799 393640 404238 405600 416520 442845 451230 454200 462800 472368 481312 492050 511732 520650 538984 541476 545040 555360 590460 601640 605600 606357 608400 639665 640800 673730 676845 681300 694200 708552 721968 738075 752050 767598 787280 808476 833040 875849 885690 902460 908400 925600 944736 984100 1010595 1023464 1041300 1077968 1082952 1090080 1128075 1151397 1180920 1203280 1212714 1216800 1279330 1347460 1353690 1362600 1388400 1417104 1443936 1476150 1504100 1535196 1574560 1616952 1666080 1684325 1751698 1771380 1804920 1816800 1918995 1968200 2021190 2046928 2082600 2155936 2165904 2214225 2256150 2302794 2361840 2406560 2425428 2558660 2627547 2694920 2707380 2725200 2776800 2834208 2952300 3008200 3031785 3070392 3198325 3233904 3368650 3384225 3503396 3542760 3609840 3837990 3936400 4042380 4093856 4165200 4331808 4379245 4428450 4512300 4605588 4723680 4850856 5052975 5117320 5255094 5389840 5414760 5450400 5756985 5904600 6016400 6063570 6140784 6396650 6467808 6737300 6768450 7006792 7085520 7219680 7675980 7872800 7882641 8084760 8330400 8758490 8856900 9024600 9211176 9594975 9701712 10105950 10234640 10510188 10779680 10829520 11386037 11513970 11809200 12032800 12127140 12281568 12793300 13137735 13474600 13536900 14013584 14171040 15158925 15351960 15765282 16169520 17516980 17713800 18049200 18422352 19189950 19403424 20211900 20469280 21020376 21659040 21896225 22772074 23027940 23618400 24254280 25586600 26275470 26949200 27073800 28027168 28784925 30317850 30703920 31530564 32339040 34158111 35033960 35427600 36098400 36844704 38379900 39413205 40423800 42040752 43792450 45544148 46055880 48508560 51173200 52550940 53898400 54147600 56930185 57569850 60635700 61407840 63061128 65688675 68316222 70067920 70855200 76759800 78826410 80847600 84081504 87584900 91088296 92111760 97017120 102346400 102474333 105101880 108295200 113860370 115139700 121271400 126122256 131377350 136632444 140135840 153519600 157652820 161695200 170790555 175169800 182176592 184223520 197066025 204948666 210203760 227720740 230279400 242542800 252244512 262754700 273264888 284650925 307039200 315305640 341581110 350339600 364353184 394132050 409897332 420407520 455441480 460558800 485085600 512371665 525509400 546529776 569301850 630611280 683162220 700679200 788264100 819794664 853952775 910882960 921117600 1024743330 1051018800 1093059552 1138603700 1261222560 1366324440 1576528200 1639589328 1707905550 1821765920 2049486660 2102037600 2277207400 2561858325 2732648880 3153056400 3279178656 3415811100 4098973320 4554414800 5123716650 5465297760 6306112800 6831622200 8197946640 9108829600 10247433300 13663244400 16395893280 20494866600 27326488800 40989733200 81979466400
• Sum of all divisors σ(n): 316962877140
• Sum of proper divisors (its aliquot sum) s(n): 234983410740
• 81979466400 is an abundant number, because the sum of its proper divisors (234983410740) is greater than itself. Its abundance is 153003944340

Bases of 81979466400

• Binary: 1001100010110010110110110001010100000₂
• Hexadecimal: 0x13165B62A0
• Base-36: 11NSGH40

Squares and roots of 81979466400

• 81979466400 squared (81979466400²) is 6720632911228728960000
• 81979466400 cubed (81979466400³) is 550953899932809768491026944000000
• The square root of 81979466400 is 286320.5657999439
• The cube root of 81979466400 is 4344.1188219791

Scales and comparisons

• 81,979,466,400 seconds is equal to 2,606 years, 36 weeks, 10 hours.
• To count from 1 to 81,979,466,400 would take you about five thousand, two hundred thirteen 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 81979466400 cubic inches would be around 362 feet tall.

Recreational maths with 81979466400

• 81979466400 backwards is 00466497918
• The number of decimal digits it has is: 11
• The sum of 81979466400's digits is 54
• More coming soon!