81379719200

Names of 81379719200

• Cardinal: 81379719200 can be written as Eighty-one billion, three hundred seventy-nine million, seven hundred nineteen thousand, two hundred.

Scientific notation

• Scientific notation: 8.13797192 × 10¹⁰

Factors of 81379719200

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 391

Divisors of 81379719200

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 25 26 32 40 41 50 52 53 65 80 82 100 104 106 130 160 164 169 200 205 208 212 260 265 277 325 328 338 400 410 416 424 520 530 533 554 650 656 676 689 800 820 845 848 1025 1040 1060 1066 1108 1300 1312 1325 1352 1378 1385 1640 1690 1696 2050 2080 2120 2132 2173 2216 2600 2650 2665 2704 2756 2770 3280 3380 3445 3601 4100 4225 4240 4264 4346 4432 5200 5300 5330 5408 5512 5540 6560 6760 6890 6925 6929 7202 8200 8450 8480 8528 8692 8864 8957 10400 10600 10660 10865 11024 11080 11357 13325 13520 13780 13850 13858 14404 14681 16400 16900 17056 17225 17384 17914 18005 21200 21320 21730 22048 22160 22714 26650 27040 27560 27700 27716 28249 28808 29362 32800 33800 34450 34645 34768 35828 36010 42400 42640 43460 44320 44785 45428 46813 53300 54325 55120 55400 55432 56498 56785 57616 58724 67600 68900 69290 69536 71656 72020 73405 85280 86920 89570 90025 90856 93626 106600 108650 110240 110800 110864 112996 113570 115232 117448 135200 137800 138580 141245 143312 144040 146810 147641 173225 173840 179140 180050 181712 187252 190853 213200 217300 221600 221728 223925 225992 227140 234065 234896 275600 277160 282490 283925 286624 288080 293620 295282 346450 347680 358280 360100 363424 367025 367237 374504 381706 426400 434600 447850 451984 454280 468130 469792 551200 554320 564980 567850 576160 587240 590564 601921 692900 706225 716560 720200 734050 734474 738205 749008 763412 869200 895700 903968 908560 936260 954265 1108640 1129960 1135700 1170325 1174480 1181128 1203842 1385800 1412450 1433120 1440400 1468100 1468948 1476410 1498016 1526824 1738400 1791400 1817120 1836185 1872520 1908530 1919333 2259920 2271400 2340650 2348960 2362256 2407684 2481089 2771600 2824900 2880800 2936200 2937896 2952820 3009605 3053648 3582800 3672370 3691025 3745040 3817060 3838666 4519840 4542800 4681300 4724512 4771325 4815368 4962178 5543200 5649800 5872400 5875792 5905640 6019210 6107296 7165600 7344740 7382050 7490080 7634120 7677332 7824973 9085600 9180925 9362600 9542650 9596665 9630736 9924356 11299600 11744800 11751584 11811280 12038420 12405445 14689480 14764100 15048025 15268240 15354664 15649946 18361850 18725200 19085300 19193330 19261472 19848712 22599200 23622560 24076840 24810890 29378960 29528200 30096050 30536480 30709328 31299892 36723700 37450400 38170600 38386660 39124865 39697424 47983325 48153680 49621780 58757920 59056400 60192100 61418656 62027225 62599784 73447400 76341200 76773320 78249730 79394848 95966650 96307360 99243560 101724649 118112800 120384200 124054450 125199568 146894800 152682400 153546640 156499460 191933300 195624325 198487120 203449298 240768400 248108900 250399136 293789600 307093280 312998920 383866600 391248650 396974240 406898596 481536800 496217800 508623245 625997840 767733200 782497300 813797192 992435600 1017246490 1251995680 1535466400 1564994600 1627594384 1984871200 2034492980 2543116225 3129989200 3255188768 4068985960 5086232450 6259978400 8137971920 10172464900 16275943840 20344929800 40689859600 81379719200
• Sum of all divisors σ(n): 225341499096
• Sum of proper divisors (its aliquot sum) s(n): 143961779896
• 81379719200 is an abundant number, because the sum of its proper divisors (143961779896) is greater than itself. Its abundance is 62582060696

Bases of 81379719200

• Binary: 1001011110010100110111111100000100000₂
• Hexadecimal: 0x12F29BF820
• Base-36: 11DVDT7K

Squares and roots of 81379719200

• 81379719200 squared (81379719200²) is 6622658697070848640000
• 81379719200 cubed (81379719200³) is 538950105125063524828901888000000
• The square root of 81379719200 is 285271.3080560329
• The cube root of 81379719200 is 4333.4992825337

Scales and comparisons

• 81,379,719,200 seconds is equal to 2,587 years, 32 weeks, 2 days, 21 hours, 33 minutes, 20 seconds.
• To count from 1 to 81,379,719,200 would take you about five thousand, one hundred seventy-five 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 81379719200 cubic inches would be around 361.1 feet tall.

Recreational maths with 81379719200

• 81379719200 backwards is 00291797318
• The number of decimal digits it has is: 11
• The sum of 81379719200's digits is 47
• More coming soon!