21180721829085

Names of 21180721829085

• Cardinal: 21180721829085 can be written as Twenty-one trillion, one hundred eighty billion, seven hundred twenty-one million, eight hundred twenty-nine thousand and eighty-five.

Scientific notation

• Scientific notation: 2.1180721829085 × 10¹³

Factors of 21180721829085

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 635

Divisors of 21180721829085

• Number of divisors d(n): 448
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 49 63 65 91 105 117 135 147 169 189 195 245 273 315 343 351 441 455 507 585 607 637 735 819 845 945 1029 1183 1323 1365 1521 1715 1755 1821 1911 2197 2205 2401 2457 2535 3035 3087 3185 3549 4095 4249 4459 4563 5145 5463 5733 5915 6591 6615 7203 7605 7891 8281 9105 9261 9555 10647 10985 12005 12285 12747 13377 15379 15435 16389 16807 17199 17745 19773 21245 21609 22295 22815 23673 24843 27315 28665 29743 31213 31941 32955 36015 38241 39455 40131 41405 46137 46305 50421 53235 55237 57967 59319 63735 64827 66885 71019 74529 76895 81945 84035 85995 89229 93639 98865 102583 107653 108045 114723 117649 118365 120393 124215 138411 148715 151263 156065 159705 165711 173901 191205 200655 208201 213057 218491 223587 230685 252105 267687 276185 280917 289835 296595 307749 322959 324135 352947 355095 372645 386659 405769 415233 446145 453789 468195 497133 512915 521703 538265 573615 588245 601965 624603 655473 692055 718081 753571 756315 803061 828555 842751 869505 923247 968877 1041005 1058841 1065285 1092455 1117935 1159977 1217307 1333579 1338435 1404585 1457407 1491399 1529437 1538745 1565109 1614795 1764735 1873809 1933295 1966419 2028845 2076165 2154243 2260713 2268945 2485665 2608515 2706613 2769741 2840383 2906631 3123015 3176523 3277365 3479931 3590405 3651921 3767855 4000737 4015305 4213755 4372221 4588311 4616235 4844385 5026567 5274997 5294205 5621427 5799885 5899257 6086535 6462729 6667895 6782139 7287035 7456995 7647185 7825545 8119839 8521149 9335053 9369045 9832095 10201849 10439793 10771215 10955763 11303565 12002211 13116663 13533065 13764933 13848705 14201915 14533155 15079701 15824991 15882615 17399655 18259605 18946291 19388187 19882681 20003685 20346417 21861105 22941555 24359517 25132835 25563447 26374985 28005159 28107135 29496285 30605547 32313645 33910695 35185969 36006633 36924979 39349989 40599195 41294799 42605745 45239103 46675265 47474973 51009245 52198965 54778815 56838873 59648043 60011055 65345371 65583315 68824665 71412943 73078551 75398505 76690341 79124955 84015477 91816641 94731455 96940935 99413405 101732085 105557907 110774937 121797585 127817235 132624037 135717309 140025795 142424919 153027735 170516619 175929845 178944129 180033165 184624895 196036113 196749945 206473995 214238829 226195515 237374865 246301783 252046431 258474853 275449923 284194365 298240215 316673721 326726855 332324811 357064715 365392755 383451705 397872111 420077385 457417597 459083205 511549857 527789535 536832387 553874685 588108339 642716487 663120185 678586545 712124595 738905349 775424559 852583095 894720645 928368259 950021163 980180565 996974433 1071194145 1193616333 1231508915 1260232155 1292374265 1372252791 1377249615 1583368605 1661624055 1724112481 1764325017 1928149461 1989360555 2216716047 2287087985 2326273677 2557749285 2684161935 2785104777 2940541695 3201923179 3213582435 3580848999 3694526745 3877122795 4116758373 4641841295 4750105815 4984872165 5172337443 5968081665 6650148141 6861263955 6978821031 8355314331 8620562405 8821625085 9605769537 9640747305 11083580235 11631368385 12068787367 12350275119 13925523885 15517012329 16009615895 17904244995 20583791865 22413462253 25065942993 25861687215 28817308611 33250740705 34894105155 36206362101 41776571655 46551036987 48028847685 60343936835 61751375595 67240386759 77585061645 86451925833 108619086303 112067311265 125329714965 144086543055 156894235771 181031810505 201721160277 232755184935 325857258909 336201933795 432259629165 470682707313 543095431515 605163480831 784471178855 1008605801385 1412048121939 1629286294545 2353413536565 3025817404155 4236144365817 7060240609695 21180721829085
• Sum of all divisors σ(n): 47667928627200
• Sum of proper divisors (its aliquot sum) s(n): 26487206798115
• 21180721829085 is an abundant number, because the sum of its proper divisors (26487206798115) is greater than itself. Its abundance is 5306484969030

Bases of 21180721829085

• Binary: 100110100001110000101011001101001010011011101₂
• Hexadecimal: 0x1343856694DD
• Base-36: 7IAAEWNH9

Squares and roots of 21180721829085

• 21180721829085 squared (21180721829085²) is 448622977201077827951937225
• 21180721829085 cubed (21180721829085³) is 9502158486231971425891594759771099189125
• The square root of 21180721829085 is 4602251.8215635485
• The cube root of 21180721829085 is 27668.1583264603

Scales and comparisons

• 21,180,721,829,085 seconds is equal to 673,481 years, 22 weeks, 5 days, 9 hours, 24 minutes, 45 seconds.
• To count from 1 to 21,180,721,829,085 would take you about one million, six hundred eighty-three thousand, seven 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 21180721829085 cubic inches would be around 2305.7 feet tall.

Recreational maths with 21180721829085

• 21180721829085 backwards is 58092812708112
• The number of decimal digits it has is: 14
• The sum of 21180721829085's digits is 54
• More coming soon!