21164138809920

Names of 21164138809920

• Cardinal: 21164138809920 can be written as Twenty-one trillion, one hundred sixty-four billion, one hundred thirty-eight million, eight hundred nine thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.116413880992 × 10¹³

Factors of 21164138809920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 5336744

Divisors of 21164138809920

• Number of divisors d(n): 392
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 27 30 32 34 36 40 45 48 51 54 60 64 68 72 80 81 85 90 96 102 108 120 135 136 144 153 160 162 170 180 192 204 216 240 243 255 270 272 288 306 320 324 340 360 405 408 432 459 480 486 510 540 544 576 612 648 680 720 729 765 810 816 864 918 960 972 1020 1080 1088 1215 1224 1296 1360 1377 1440 1458 1530 1620 1632 1728 1836 1944 2040 2160 2295 2430 2448 2592 2720 2754 2880 2916 3060 3240 3264 3645 3672 3888 4080 4131 4320 4590 4860 4896 5184 5440 5508 5832 6120 6480 6885 7290 7344 7776 8160 8262 8640 9180 9720 9792 11016 11664 12240 12393 12960 13770 14580 14688 15552 16320 16524 18360 19440 20655 22032 23328 24480 24786 25920 27540 29160 29376 33048 36720 38880 41310 44064 46656 48960 49572 55080 58320 61965 66096 73440 77760 82620 88128 99144 110160 116640 123930 132192 146880 165240 198288 220320 233280 247860 264384 330480 396576 440640 495720 660960 793152 991440 1321920 1982880 3965760 5336717 10673434 16010151 21346868 26683585 32020302 42693736 48030453 53367170 64040604 80050755 85387472 90724189 96060906 106734340 128081208 144091359 160101510 170774944 181448378 192121812 213468680 240152265 256162416 272172567 288182718 320203020 341549888 362896756 384243624 426937360 432274077 453620945 480304530 512324832 544345134 576365436 640406040 720456795 725793512 768487248 816517701 853874720 864548154 907241890 960609060 1024649664 1088690268 1152730872 1280812080 1296822231 1360862835 1440913590 1451587024 1536974496 1633035402 1707749440 1729096308 1814483780 1921218120 2161370385 2177380536 2305461744 2449553103 2561624160 2593644462 2721725670 2881827180 2903174048 3073948992 3266070804 3458192616 3628967560 3842436240 3890466693 4082588505 4322740770 4354761072 4610923488 4899106206 5123248320 5187288924 5443451340 5763654360 5806348096 6484111155 6532141608 6916385232 7257935120 7348659309 7684872480 7780933386 8165177010 8645481540 8709522144 9221846976 9798212412 10374577848 10886902680 11527308720 12247765515 12968222310 13064283216 13832770464 14515870240 14697318618 15369744960 15561866772 16330354020 17290963080 17419044288 19452333465 19596424824 20749155696 21773805360 22045977927 23054617440 24495531030 25936444620 26128566432 27665540928 29031740480 29394637236 31123733544 32660708040 34581926160 36743296545 38904666930 39192849648 41498311392 43547610720 44091955854 46109234880 48991062060 51872889240 52257132864 58789274472 62247467088 65321416080 66137933781 69163852320 73486593090 77809333860 78385699296 82996622784 87095221440 88183911708 97982124120 103745778480 110229889635 117578548944 124494934176 130642832160 132275867562 138327704640 146973186180 155618667720 156771398592 176367823416 195964248240 207491556960 220459779270 235157097888 248989868352 261285664320 264551735124 293946372360 311237335440 330689668905 352735646832 391928496480 414983113920 440919558540 470314195776 529103470248 587892744720 622474670880 661379337810 705471293664 783856992960 881839117080 1058206940496 1175785489440 1244949341760 1322758675620 1410942587328 1763678234160 2116413880992 2351570978880 2645517351240 3527356468320 4232827761984 5291034702480 7054712936640 10582069404960 21164138809920
• Sum of all divisors σ(n): 80005877528184
• Sum of proper divisors (its aliquot sum) s(n): 58841738718264
• 21164138809920 is an abundant number, because the sum of its proper divisors (58841738718264) is greater than itself. Its abundance is 37677599908344

Bases of 21164138809920

• Binary: 100110011111110101000111110011100101001000000₂
• Hexadecimal: 0x133FA8F9CA40
• Base-36: 7I2O5T000

Squares and roots of 21164138809920

• 21164138809920 squared (21164138809920²) is 447920771565561953890406400
• 21164138809920 cubed (21164138809920³) is 9479857385260020546066135620601151488000
• The square root of 21164138809920 is 4600449.8486474125
• The cube root of 21164138809920 is 27660.9356989329

Scales and comparisons

• 21,164,138,809,920 seconds is equal to 672,954 years, 7 weeks, 5 days, 7 hours, 12 minutes.
• To count from 1 to 21,164,138,809,920 would take you about one million, six hundred eighty-two thousand, three hundred eighty-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 21164138809920 cubic inches would be around 2305.1 feet tall.

Recreational maths with 21164138809920

• 21164138809920 backwards is 02990883146112
• 21164138809920 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21164138809920's digits is 54
• More coming soon!