21368154921680

Names of 21368154921680

• Cardinal: 21368154921680 can be written as Twenty-one trillion, three hundred sixty-eight billion, one hundred fifty-four million, nine hundred twenty-one thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.136815492168 × 10¹³

Factors of 21368154921680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 364

Divisors of 21368154921680

• Number of divisors d(n): 560
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 19 20 28 35 38 40 49 56 70 76 80 95 98 112 133 140 152 190 196 245 266 280 304 331 343 361 380 392 490 532 560 662 665 686 722 760 784 931 980 1064 1324 1330 1372 1444 1520 1655 1715 1805 1862 1960 2128 2317 2401 2527 2648 2660 2744 2888 3310 3430 3610 3724 3920 4634 4655 4802 5054 5296 5320 5488 5776 6289 6517 6620 6859 6860 7220 7448 9268 9310 9604 10108 10640 11585 12005 12578 12635 13034 13240 13718 13720 14440 14896 16219 16807 17689 18536 18620 19208 20216 23170 24010 25156 25270 26068 26480 27436 27440 28880 31445 32438 32585 33614 34295 35378 37072 37240 38416 40432 44023 45619 46340 48013 48020 50312 50540 52136 54872 62890 64876 65170 67228 68590 70756 74480 81095 84035 88046 88445 91238 92680 96026 96040 100624 101080 104272 109744 113533 117649 119491 123823 125780 129752 130340 134456 137180 141512 162190 168070 176092 176890 182476 185360 192052 192080 202160 220115 227066 228095 235298 238982 240065 247646 251560 259504 260680 268912 274360 283024 308161 319333 324380 336091 336140 352184 353780 364952 384104 440230 454132 456190 470596 477964 480130 495292 503120 521360 548720 567665 588245 597455 616322 619115 638666 648760 672182 672280 704368 707560 729904 768208 794731 836437 866761 880460 908264 912380 941192 955928 960260 990584 1135330 1176490 1194910 1232644 1238230 1277332 1297520 1344364 1344560 1415120 1540805 1589462 1596665 1672874 1680455 1733522 1760920 1816528 1824760 1882384 1911856 1920520 1981168 2157127 2235331 2270329 2270660 2352637 2352980 2389820 2465288 2476460 2554664 2688728 3081610 3178924 3193330 3345748 3360910 3467044 3521840 3649520 3841040 3973655 4182185 4314254 4333805 4470662 4540658 4541320 4705274 4705960 4779640 4930576 4952920 5109328 5377456 5563117 5855059 6067327 6163220 6357848 6386660 6691496 6721820 6934088 7947310 8364370 8628508 8667610 8941324 9081316 9082640 9410548 9411920 9559280 9905840 10785635 11126234 11176655 11351645 11710118 11763185 12134654 12326440 12715696 12773320 13382992 13443640 13868176 15099889 15892303 15894620 16468459 16728740 17257016 17335220 17882648 18162632 18821096 21571270 22252468 22353310 22703290 23420236 23526370 24269308 24652880 25546640 26887280 27815585 29275295 30199778 30336635 31784606 31789240 32936918 33457480 34514032 34670440 35765296 36325264 37642192 38941819 40985413 42471289 43142540 44504936 44706620 45406580 46840472 47052740 48538616 55631170 58550590 60399556 60673270 63569212 63578480 65873836 66914960 69340880 75499445 77883638 79461515 81970826 82342295 84942578 86285080 89009872 89413240 90813160 93680944 94105480 97077232 105699223 111246121 111262340 115279213 117101180 120799112 121346540 127138424 131747672 150998890 155767276 158923030 163941652 164684590 169885156 172570160 178826480 181626320 188210960 194709095 204927065 211398446 212356445 222492242 222524680 230558426 234202360 241598224 242693080 254276848 263495344 286897891 301997780 311534552 317846060 327883304 329369180 339770312 389418190 409854130 422796892 424712890 444984484 445049360 461116852 468404720 485386160 528496115 556230605 573795782 576396065 603995560 623069104 635692120 655766608 658738360 679540624 739894561 778722847 778836380 806954491 819708260 845593784 849425780 889968968 922233704 1056992230 1112461210 1147591564 1152792130 1207991120 1271384240 1317476720 1434489455 1479789122 1557445694 1557672760 1613908982 1639416520 1691187568 1698851560 1779937936 1844467408 2008285237 2113984460 2224922420 2295183128 2305584260 2868978910 2959578244 3114891388 3115345520 3227817964 3278833040 3397703120 3699472805 3893614235 4016570474 4034772455 4227968920 4449844840 4590366256 4611168520 5451059929 5737957820 5919156488 6229782776 6455635928 7398945610 7787228470 8033140948 8069544910 8455937840 8899689680 9222337040 10041426185 10902119858 11475915640 11838312976 12459565552 12911271856 14057996659 14797891220 15574456940 16066281896 16139089820 20082852370 21804239716 22951831280 27255299645 28115993318 29595782440 31148913880 32132563792 32278179640 38157419503 40165704740 43608479432 54510599290 56231986636 59191564880 62297827760 64556359280 70289983295 76314839006 80331409480 87216958864 109021198580 112463973272 140579966590 152629678012 160662818960 190787097515 218042397160 224927946544 267101936521 281159933180 305259356024 381574195030 436084794320 534203873042 562319866360 610518712048 763148390060 1068407746084 1124639732720 1335509682605 1526296780120 2136815492168 2671019365210 3052593560240 4273630984336 5342038730420 10684077460840 21368154921680
• Sum of all divisors σ(n): 61365474471360
• Sum of proper divisors (its aliquot sum) s(n): 39997319549680
• 21368154921680 is an abundant number, because the sum of its proper divisors (39997319549680) is greater than itself. Its abundance is 18629164628000

Bases of 21368154921680

• Binary: 100110110111100101001010010001001101011010000₂
• Hexadecimal: 0x136F29489AD0
• Base-36: 7KOE7QBBK

Squares and roots of 21368154921680

• 21368154921680 squared (21368154921680²) is 456598044756917206934022400
• 21368154921680 cubed (21368154921680³) is 9756657757301985334571509769599365632000
• The square root of 21368154921680 is 4622570.1640624125
• The cube root of 21368154921680 is 27749.5327342493

Scales and comparisons

• 21,368,154,921,680 seconds is equal to 679,441 years, 11 weeks, 6 days, 21 hours, 21 minutes, 20 seconds.
• To count from 1 to 21,368,154,921,680 would take you about one million, six hundred ninety-eight 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 21368154921680 cubic inches would be around 2312.5 feet tall.

Recreational maths with 21368154921680

• 21368154921680 backwards is 08612945186312
• 21368154921680 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21368154921680's digits is 56
• More coming soon!