21031720989825

Names of 21031720989825

• Cardinal: 21031720989825 can be written as Twenty-one trillion, thirty-one billion, seven hundred twenty million, nine hundred eighty-nine thousand, eight hundred twenty-five.

Scientific notation

• Scientific notation: 2.1031720989825 × 10¹³

Factors of 21031720989825

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1613

Divisors of 21031720989825

• Number of divisors d(n): 768
• Complete list of divisors:
  1 3 5 7 13 15 17 19 21 25 31 35 39 51 57 65 75 85 91 93 95 105 119 133 155 175 195 217 221 241 247 255 273 285 323 325 357 399 403 425 455 465 475 525 527 589 595 651 663 665 723 741 775 969 975 1085 1105 1205 1209 1235 1275 1277 1365 1425 1547 1581 1615 1687 1729 1767 1785 1995 2015 2261 2275 2325 2635 2821 2945 2975 3133 3255 3315 3325 3615 3689 3705 3831 4097 4123 4199 4579 4641 4845 5061 5187 5425 5525 6025 6045 6175 6385 6783 6825 6851 7471 7657 7735 7905 8075 8435 8463 8645 8835 8925 8939 9399 9975 10013 10075 11067 11305 12291 12369 12597 13175 13737 14105 14725 15665 16275 16575 16601 18075 18445 18525 19155 20485 20553 20615 20995 21709 21931 22413 22895 22971 23205 24225 24263 25305 25935 26817 28679 29393 30039 30225 31925 32053 33915 34255 37355 38285 38675 39525 39587 42175 42315 43225 44175 44695 46995 47957 49803 50065 52297 53261 53599 55335 56525 59527 61455 61845 62985 65127 65793 68685 70091 70525 72789 77843 78325 83005 86037 88179 92225 95775 96159 97123 102425 102765 103075 104975 108545 109655 112065 114475 114855 116025 116207 118761 121315 126525 127007 129675 130169 134085 141949 143395 143871 146965 150195 151963 156891 159783 160265 160797 169575 169841 171275 178581 186775 191425 197935 210273 211575 223475 233529 234975 239785 249015 250325 261485 266305 267995 276675 277109 282217 291369 297635 307275 307757 309225 314925 315419 325635 328965 343425 348621 350455 363945 372827 381021 389215 390507 412471 415025 416689 425847 430185 440895 455889 480795 485615 509523 513825 514631 542725 544901 548275 560325 574275 581035 593805 606575 635035 650845 670425 672979 679861 709745 716975 719355 734825 750975 752153 759815 784455 798915 801325 803985 831327 846651 849205 889049 892905 911183 923271 946257 989675 993643 1011959 1051365 1118481 1167645 1198925 1237413 1245075 1250067 1307425 1331525 1339975 1385545 1411085 1456845 1488175 1538785 1543893 1577095 1628175 1634703 1644825 1651091 1743105 1752275 1819725 1845337 1864135 1905105 1946075 1952535 1975519 2018937 2039583 2062355 2083445 2129235 2150925 2154299 2204475 2207933 2256459 2279445 2403975 2413133 2428075 2547615 2573155 2667147 2724505 2733549 2887297 2905175 2969025 2980929 3035877 3175175 3254225 3364895 3399305 3548725 3596775 3602417 3760765 3799075 3922275 3994575 4000841 4019925 4156635 4233255 4246025 4445245 4464525 4555915 4616355 4710853 4731285 4953273 4968215 5059795 5231869 5256825 5265071 5362123 5536011 5592405 5838225 5847383 5926557 6187065 6250335 6462897 6623799 6927725 7055425 7083713 7239399 7284225 7693925 7719465 7885475 8173515 8255455 8661891 8715525 8748727 9226685 9320675 9525525 9540467 9762675 9777989 9877595 10094685 10197915 10311775 10417225 10646175 10771495 10807251 11039665 11282295 11397225 11557637 12002523 12065665 12738075 12786601 12865775 12917359 13335735 13622525 13667745 14132559 14436485 14904645 15179385 15695607 15795213 16086369 16824475 16891931 16996525 17542149 18012085 18803825 20004205 20783175 21166275 21251139 22226225 22779575 23081775 23554265 23656425 24766365 24841075 25298975 26159345 26246181 26325355 26810615 27680055 27962025 28005887 28621401 29236915 29333967 29632785 30935325 31251675 31370729 32314485 33118995 34672911 35418565 36196995 36623083 37534861 38359803 38597325 38752077 40867575 40931681 41277275 43309455 43743635 46133425 47702335 48889945 49387975 50473425 50675793 50989575 53857475 54036255 55198325 56411475 57788185 60012615 60328325 61241089 63933005 64586795 66678675 66783269 68014297 68338725 68445923 70662795 72182425 74523225 75896925 76015979 78478035 78976065 80431845 84017661 84459655 87710745 89506207 90060425 94112187 99405511 100021025 106255695 109869249 112604583 117771325 122795043 123831825 124026071 130796725 131230905 131626775 134053075 138400275 140029435 143107005 146184575 146669835 148163925 156853645 161572425 162187939 165594975 166225813 173364555 177092825 180984975 181268873 183115415 183723267 187674305 191799015 193760385 200349807 204042891 204658405 205337769 216547275 218718175 219595103 228047937 238511675 244449725 253378965 268518621 270181275 288940925 298216533 300063075 306205445 319665025 322933975 333916345 340071485 342229615 353313975 372078213 380079895 392390175 394880325 402159225 420088305 422298275 438553725 447531035 470560935 476100079 486563817 497027555 498677439 531278475 532111853 543806619 549346245 563022915 613975215 620130355 656154525 658785309 695838577 700147175 715535025 733349175 784268225 810939695 831129065 866822775 868182497 906344365 915577075 918616335 938371525 958995075 968801925 1001749035 1020214455 1023292025 1026688845 1097975515 1135315573 1140239685 1163580691 1266894825 1268882111 1292271643 1342593105 1428300237 1491082665 1531027225 1596335559 1669581725 1700357425 1711148075 1860391065 1900399475 2087515731 2100441525 2108443207 2237655175 2352804675 2356495349 2380500395 2432819085 2485137775 2493387195 2604547491 2660559265 2719033095 2746731225 2815114575 3069876075 3081570841 3100651775 3293926545 3405946719 3479192885 3490742073 3806646333 3876814929 4054698475 4155645325 4340912485 4531721825 4593081675 5008745175 5101072275 5133444225 5489877575 5676577865 5701198425 5817903455 6325329621 6344410555 6461358215 6712965525 7069486047 7141501185 7455413325 7981677795 9045901501 9244712523 9301955325 10437578655 10542216035 11782476745 11902501975 12164095425 12466935975 13022737455 13302796325 13595165475 14759102449 15407854205 16469632725 16495467443 17029733595 17395964425 17453710365 19033231665 19384074645 21570995887 21704562425 27137704503 28382889325 29089517275 31626648105 31722052775 32306791075 35347430235 35707505925 39908388975 40060420933 44277307347 45229507505 46223562615 49486402329 52187893275 52711080175 58912383725 64712987661 65113687275 73795512245 77039271025 82477337215 85148667975 87268551825 95166158325 96920373225 107854979435 120181262799 135688522515 158133240525 176737151175 200302104665 221386536735 226147537525 231117813075 247432011645 280422946531 323564938305 368977561225 412386686075 539274897175 600906313995 678442612575 841268839593 1001510523325 1106932683675 1237160058225 1402114732655 1617824691525 3004531569975 4206344197965 7010573663275 21031720989825
• Sum of all divisors σ(n): 49480993013760
• Sum of proper divisors (its aliquot sum) s(n): 28449272023935
• 21031720989825 is an abundant number, because the sum of its proper divisors (28449272023935) is greater than itself. Its abundance is 7417551034110

Bases of 21031720989825

• Binary: 100110010000011010100010000100011010010000001₂
• Hexadecimal: 0x1320D4423481
• Base-36: 7GDU7NK3L

Squares and roots of 21031720989825

• 21031720989825 squared (21031720989825²) is 442333287793845477753530625
• 21031720989825 cubed (21031720989825³) is 9303030293392122401921585133813450890625
• The square root of 21031720989825 is 4586035.4326831145
• The cube root of 21031720989825 is 27603.1261729825

Scales and comparisons

• 21,031,720,989,825 seconds is equal to 668,743 years, 34 weeks, 6 days, 15 hours, 23 minutes, 45 seconds.
• To count from 1 to 21,031,720,989,825 would take you about one million, six hundred seventy-one thousand, eight hundred fifty-nine 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 21031720989825 cubic inches would be around 2300.3 feet tall.

Recreational maths with 21031720989825

• 21031720989825 backwards is 52898902713012
• 21031720989825 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21031720989825's digits is 57
• More coming soon!