21129138391725

Names of 21129138391725

• Cardinal: 21129138391725 can be written as Twenty-one trillion, one hundred twenty-nine billion, one hundred thirty-eight million, three hundred ninety-one thousand, seven hundred twenty-five.

Scientific notation

• Scientific notation: 2.1129138391725 × 10¹³

Factors of 21129138391725

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 309

Divisors of 21129138391725

• Number of divisors d(n): 864
• Complete list of divisors:
  1 3 5 7 9 13 15 21 25 27 29 35 39 45 63 65 71 75 87 91 105 117 135 145 169 175 181 189 195 203 213 225 261 273 315 325 351 355 377 435 455 497 507 525 543 585 609 639 675 725 783 819 845 905 923 945 975 1015 1065 1131 1183 1267 1305 1365 1491 1521 1575 1629 1755 1775 1827 1885 1917 2059 2175 2275 2353 2457 2485 2535 2639 2715 2769 2925 3045 3195 3393 3549 3801 3915 4095 4225 4473 4525 4563 4615 4725 4887 4901 5041 5075 5249 5325 5481 5655 5915 6177 6335 6461 6525 6825 7059 7455 7605 7917 8145 8307 8775 9135 9425 9585 10179 10295 10647 11403 11765 11999 12285 12425 12675 12851 13195 13419 13575 13845 14413 14703 15123 15225 15747 15975 16471 16965 17745 18531 19005 19383 19575 20475 21177 22365 22815 23075 23751 24435 24505 24921 25205 26245 26767 27405 28275 29575 30589 30885 31675 31941 32305 34209 34307 35287 35295 35997 36743 37275 38025 38553 39585 40725 41535 43239 44109 45369 45675 47241 47925 49413 50895 51475 53235 55593 57015 58149 58825 59995 61425 63531 64255 65533 65975 67095 68237 69225 71253 72065 73515 75615 78735 80301 82355 83993 84825 88725 89957 91767 92655 95025 96915 102921 105861 105885 107991 110229 111825 114075 115659 118755 122175 122525 124605 126025 129717 131225 132327 133835 136107 137025 141723 146189 148239 152945 154425 159705 161525 167063 171045 171535 174447 176435 176475 179985 183715 187369 192765 196599 197925 204711 207675 214123 216195 220545 226845 236205 240903 247065 251979 254475 266175 269871 275301 277965 285075 290745 299975 308763 317583 317655 321275 323973 327665 330687 335475 341185 346977 347971 356265 360325 367575 372679 378075 389151 393675 401505 411775 419965 438567 444717 449785 458731 458835 463275 477659 484575 501189 514605 529305 529425 539955 551145 562107 578295 589797 593775 614133 623025 642369 648585 661635 669175 680535 708615 722709 730945 741195 755937 764725 798525 809613 825903 835315 851929 855225 857675 872235 882175 887081 899925 912421 918575 926289 936845 952749 963825 982995 992061 1023323 1023555 1043913 1070615 1080975 1102725 1118037 1134225 1169441 1181025 1204515 1235325 1259895 1315701 1349355 1376193 1376505 1389825 1432977 1453725 1503567 1543815 1587915 1588275 1619865 1638325 1653435 1686321 1705925 1734885 1739855 1769391 1781325 1842399 1863395 1900457 1927107 1945755 2007525 2099825 2171819 2192835 2223585 2248925 2267811 2293655 2294175 2388295 2428839 2435797 2505945 2555787 2573025 2608753 2646525 2661243 2699775 2737263 2755725 2810535 2891475 2948985 3069969 3070665 3131739 3211845 3242925 3308175 3354111 3402675 3508323 3543075 3613545 3654725 3705975 3779685 3947103 4048065 4128579 4129515 4176575 4259645 4298931 4361175 4435405 4510701 4562105 4631445 4684225 4763745 4844827 4914975 4960305 5058963 5116615 5117775 5219565 5353075 5590185 5701371 5781321 5847205 5963503 6022575 6209567 6299475 6386947 6515457 6578505 6746775 6880965 6882525 7164885 7307391 7517835 7667361 7719075 7826259 7939575 7983729 8099325 8211789 8267175 8431605 8674425 8699275 8846955 9209907 9211995 9316975 9395217 9502285 9635535 9728775 10062333 10524969 10859095 10964175 11117925 11339055 11468275 11861473 11941475 12144195 12178985 12385737 12529725 12778935 12896793 13043765 13303199 13306215 13686315 14052675 14534481 14744925 15202733 15349845 15353325 15658695 16059225 16770555 17104113 17541615 17890509 18067725 18628701 18898425 19160841 19546371 19735515 20240325 20642895 20647575 21298225 21494655 21922173 22177025 22553505 22810525 23002083 23157225 23478777 23818725 23951187 24224135 24635367 24705941 24801525 25294815 25583075 26097825 26460209 27629721 27950925 28506855 28906605 29236025 29817515 31047835 31574907 31934735 32577285 32892525 33913789 34404825 35584419 35824425 36536955 37589175 38336805 39131295 39909597 39918645 41058945 42158025 43603443 44234775 45608199 46049535 46059975 46976085 47511425 48177675 50311665 51312339 52624845 53671527 54295475 55886103 56695275 57482523 58639113 59307365 60720975 60894925 61928685 62982751 63894675 64483965 65218825 65766519 66515995 66531075 68431575 70436331 72672405 74117823 76013665 76749225 78293475 79380627 83030311 83852775 85520565 87708075 89452545 93143505 95804205 97731855 98677575 101741367 103214475 106753257 107473275 109610865 112767525 115010415 117393885 119728791 119755935 121120675 123176835 123529705 126474075 130810329 132301045 136824597 138148605 142534275 144533025 149087575 154199149 155239175 157874535 159673675 161014581 162886425 167658309 169568945 172447569 172941587 177922095 182684775 185221463 188948253 191684025 195656475 199547985 199593225 205294725 218017215 222353469 228040995 230247675 234880425 238141881 249090933 251558325 256561695 263124225 268357635 279430515 287412615 293195565 296536825 305224101 309643425 314913755 320259771 322419825 328832595 332579975 343982717 352181655 359186373 363362025 370589115 380068325 396903135 410473791 415151555 427602825 440879257 447262725 462597447 465717525 479021025 488659275 508706835 518824761 533766285 548054325 555664389 566844759 575052075 586969425 598643955 598779675 615884175 617648525 654051645 661505225 667060407 684122985 690743025 714425643 747272799 770995745 789372675 805072905 838291545 847844725 862237845 864707935 889610475 915672303 926107315 944741265 997739925 1031948151 1079394043 1090086075 1111767345 1140204975 1190709405 1245454665 1282808475 1322637771 1341788175 1387792341 1397152575 1437063075 1465977825 1526120505 1556474283 1574568775 1601298855 1644162975 1666993167 1700534277 1719913585 1760908275 1795931865 1852945575 1984515675 2052368955 2075757775 2204396285 2241818397 2312987235 2407879019 2543534175 2594123805 2668831425 2778321945 2834223795 2993219775 3095844453 3238182129 3270258225 3335302035 3420614925 3572128215 3736363995 3854978725 3967913313 4025364525 4163377023 4191457725 4311189225 4323539675 4471775321 4578361515 4630536575 4669422849 4723706325 5000979501 5159740755 5396970215 5558836725 5953547025 6227273325 6613188855 6938961705 7223637057 7630602525 7782371415 8006494275 8334965835 8502671385 8599567925 8979659325 9287533359 9714546387 10261844775 11021981425 11209091985 11564936175 11903739939 12039395095 12970619025 13415325963 13891609725 14171118975 15479222265 16190910645 16676510175 17860641075 18681819975 19839566565 20816885115 21670911171 22358876605 22891807575 23347114245 25004897505 25798703775 26984851075 29143639161 31302427247 33065944275 34694808525 36118185285 38911857075 40245977889 41674829175 42513356925 46437666795 48572731935 56045459925 59518699695 60196975475 65012733513 67076629815 77396111325 80954553225 93907281741 99197832825 104084425575 108354555855 111794383025 116735571225 120737933667 125024487525 145718195805 156512136235 180590926425 201229889445 232188333975 242863659675 281721845223 297593498475 325063667565 335383149075 469536408705 541772779275 603689668335 728590979025 782560681175 845165535669 1006149447225 1408609226115 1625318337825 2347682043525 3018448341675 4225827678345 7043046130575 21129138391725
• Sum of all divisors σ(n): 50679368812800
• Sum of proper divisors (its aliquot sum) s(n): 29550230421075
• 21129138391725 is an abundant number, because the sum of its proper divisors (29550230421075) is greater than itself. Its abundance is 8421092029350

Bases of 21129138391725

• Binary: 100110011011110000010110010011100101010101101₂
• Hexadecimal: 0x133782C9CAAD
• Base-36: 7HMLBGKH9

Squares and roots of 21129138391725

• 21129138391725 squared (21129138391725²) is 446440489176667319548475625
• 21129138391725 cubed (21129138391725³) is 9432902879483210797559844920387864203125
• The square root of 21129138391725 is 4596644.2533357965
• The cube root of 21129138391725 is 27645.6790973505

Scales and comparisons

• 21,129,138,391,725 seconds is equal to 671,841 years, 12 weeks, 4 days, 20 hours, 48 minutes, 45 seconds.
• To count from 1 to 21,129,138,391,725 would take you about one million, six hundred seventy-nine thousand, six hundred 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 21129138391725 cubic inches would be around 2303.8 feet tall.

Recreational maths with 21129138391725

• 21129138391725 backwards is 52719383192112
• The number of decimal digits it has is: 14
• The sum of 21129138391725's digits is 54
• More coming soon!