21640644771840

Names of 21640644771840

• Cardinal: 21640644771840 can be written as Twenty-one trillion, six hundred forty billion, six hundred forty-four million, seven hundred seventy-one thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.164064477184 × 10¹³

Factors of 21640644771840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 6412

Divisors of 21640644771840

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 256 270 288 320 360 384 432 480 512 540 576 640 720 768 864 960 1024 1080 1152 1280 1440 1536 1728 1920 2048 2160 2304 2521 2560 2880 3072 3456 3840 3881 4096 4320 4608 5042 5120 5760 6144 6912 7563 7680 7762 8192 8640 9216 10084 10240 11520 11643 12288 12605 13824 15126 15360 15524 16384 17280 18432 19405 20168 20480 22689 23040 23286 24576 25210 27648 30252 30720 31048 34560 34929 36864 37815 38810 40336 40960 45378 46080 46572 49152 50420 55296 58215 60504 61440 62096 68067 69120 69858 73728 75630 77620 80672 81920 90756 92160 93144 100840 104787 110592 113445 116430 121008 122880 124192 136134 138240 139716 147456 151260 155240 161344 174645 181512 184320 186288 201680 209574 221184 226890 232860 242016 245760 248384 272268 276480 279432 302520 310480 322688 340335 349290 363024 368640 372576 403360 419148 442368 453780 465720 484032 496768 523935 544536 552960 558864 605040 620960 645376 680670 698580 726048 737280 745152 806720 838296 907560 931440 968064 993536 1047870 1089072 1105920 1117728 1210080 1241920 1290752 1361340 1397160 1452096 1490304 1613440 1676592 1815120 1862880 1936128 1987072 2095740 2178144 2211840 2235456 2420160 2483840 2581504 2722680 2794320 2904192 2980608 3226880 3353184 3630240 3725760 3872256 3974144 4191480 4356288 4470912 4840320 4967680 5163008 5445360 5588640 5808384 5961216 6453760 6706368 7260480 7451520 7744512 7948288 8382960 8712576 8941824 9680640 9784001 9935360 10326016 10890720 11177280 11616768 11922432 12907520 13412736 14520960 14903040 15489024 15896576 16765920 17425152 17883648 19361280 19568002 19870720 20652032 21781440 22354560 23233536 23844864 25815040 26825472 29041920 29352003 29806080 30978048 31793152 33531840 34850304 35767296 38722560 39136004 39741440 41304064 43562880 44709120 46467072 47689728 48920005 51630080 53650944 58083840 58704006 59612160 61956096 63586304 67063680 69700608 71534592 77445120 78272008 79482880 87125760 88056009 89418240 92934144 95379456 97840010 103260160 107301888 116167680 117408012 119224320 123912192 134127360 139401216 143069184 146760015 154890240 156544016 158965760 174251520 176112018 178836480 185868288 190758912 195680020 206520320 214603776 232335360 234816024 238448640 264168027 268254720 278802432 286138368 293520030 309780480 313088032 317931520 348503040 352224036 357672960 371736576 391360040 429207552 440280045 464670720 469632048 476897280 528336054 536509440 557604864 572276736 587040060 619560960 626176064 697006080 704448072 715345920 782720080 858415104 880560090 929341440 939264096 953794560 1056672108 1073018880 1115209728 1174080120 1252352128 1320840135 1394012160 1408896144 1430691840 1565440160 1716830208 1761120180 1858682880 1878528192 2113344216 2146037760 2348160240 2504704256 2641680270 2788024320 2817792288 2861383680 3130880320 3522240360 3757056384 4226688432 4292075520 4696320480 5009408512 5283360540 5576048640 5635584576 6261760640 7044480720 7514112768 8453376864 8584151040 9392640960 10018817024 10566721080 11271169152 12523521280 14088961440 15028225536 16906753728 18785281920 20037634048 21133442160 22542338304 25047042560 28177922880 30056451072 33813507456 37570563840 40075268096 42266884320 45084676608 50094085120 56355845760 60112902144 67627014912 75141127680 80150536192 84533768640 90169353216 100188170240 112711691520 120225804288 135254029824 150282255360 160301072384 169067537280 180338706432 200376340480 225423383040 240451608576 270508059648 300564510720 338135074560 360677412864 400752680960 450846766080 480903217152 541016119296 601129021440 676270149120 721354825728 801505361920 901693532160 1082032238592 1202258042880 1352540298240 1442709651456 1803387064320 2164064477184 2404516085760 2705080596480 3606774128640 4328128954368 5410161192960 7213548257280 10820322385920 21640644771840
• Sum of all divisors σ(n): 76992520288320
• Sum of proper divisors (its aliquot sum) s(n): 55351875516480
• 21640644771840 is an abundant number, because the sum of its proper divisors (55351875516480) is greater than itself. Its abundance is 33711230744640

Bases of 21640644771840

• Binary: 100111010111010011010111100011100000000000000₂
• Hexadecimal: 0x13AE9AF1C000
• Base-36: 7O5KP5HC0

Squares and roots of 21640644771840

• 21640644771840 squared (21640644771840²) is 468317506140965925656985600
• 21640644771840 cubed (21640644771840³) is 10134692790830641353116431541814165504000
• The square root of 21640644771840 is 4651950.6415954157
• The cube root of 21640644771840 is 27866.9902341749

Scales and comparisons

• 21,640,644,771,840 seconds is equal to 688,105 years, 29 weeks, 2 days, 14 hours, 24 minutes.
• To count from 1 to 21,640,644,771,840 would take you about one million, seven hundred twenty thousand, two hundred sixty-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 21640644771840 cubic inches would be around 2322.2 feet tall.

Recreational maths with 21640644771840

• 21640644771840 backwards is 04817744604612
• 21640644771840 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21640644771840's digits is 54
• More coming soon!