21309143625616728

Names of 21309143625616728

• Cardinal: 21309143625616728 can be written as Twenty-one quadrillion, three hundred nine trillion, one hundred forty-three billion, six hundred twenty-five million, six hundred sixteen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1309143625616728 × 10¹⁶

Factors of 21309143625616728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 82008886

Divisors of 21309143625616728

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 17 21 24 28 34 37 42 51 56 68 74 84 102 111 119 136 148 168 204 222 238 259 296 357 408 444 476 518 629 714 777 888 952 1036 1258 1428 1554 1887 2072 2459 2516 2856 3108 3774 4403 4918 5032 6216 7377 7548 8806 9836 13209 14754 15096 17213 17612 19672 26418 29508 34426 35224 41803 51639 52836 59016 68852 83606 90983 103278 105672 125409 137704 167212 181966 206556 250818 272949 292621 334424 363932 413112 501636 545898 585242 636881 727864 877863 1003272 1091796 1170484 1273762 1546711 1755726 1910643 2183592 2340968 2547524 3093422 3511452 3821286 4640133 5095048 6186844 7022904 7642572 9280266 10826977 12373688 15285144 18560532 21653954 32480931 37121064 43307908 64961862 82006361 86615816 129923724 164012722 246019083 259847448 328025444 492038166 574044527 656050888 984076332 1148089054 1394108137 1722133581 1968152664 2296178108 2788216274 3034235357 3444267162 4182324411 4592356216 5576432548 6068470714 6888534324 8364648822 9102706071 9758756959 11152865096 12136941428 13777068648 16729297644 18205412142 19517513918 21239647499 24273882856 29276270877 33458595288 36410824284 39035027836 42479294998 51582001069 58552541754 63718942497 72821648568 78070055672 84958589996 103164002138 117105083508 127437884994 154746003207 169917179992 201653641699 206328004276 234210167016 254875769988 309492006414 361074007483 403307283398 412656008552 509751539976 604960925097 618984012828 722148014966 806614566796 1083222022449 1209921850194 1237968025656 1411575491893 1444296029932 1613229133592 2166444044898 2419843700388 2823150983786 2888592059864 3428111908883 4234726475679 4332888089796 4839687400776 5646301967572 6856223817766 7461184742863 8469452951358 8665776179592 10284335726649 11292603935144 13712447635532 14922369485726 16938905902716 20568671453298 22383554228589 23996783362181 27424895271064 29844738971452 33877811805432 41137342906596 44767108457178 47993566724362 52228293200041 59689477942904 71990350086543 82274685813192 89534216914356 95987133448724 104456586400082 126840140628671 143980700173086 156684879600123 179068433828712 191974266897448 208913172800164 253680281257342 287961400346172 313369759200246 380520421886013 417826345600328 507360562514684 575922800692344 626739518400492 761040843772026 887880984400697 1014721125029368 1253479036800984 1522081687544052 1775761968801394 2663642953202091 3044163375088104 3551523937602788 5327285906404182 7103047875205576 10654571812808364 21309143625616728
• Sum of all divisors σ(n): 66233848778726400
• Sum of proper divisors (its aliquot sum) s(n): 44924705153109672
• 21309143625616728 is an abundant number, because the sum of its proper divisors (44924705153109672) is greater than itself. Its abundance is 23615561527492944

Bases of 21309143625616728

• Binary: 1001011101101001000110110100000010001011100110101011000₂
• Hexadecimal: 0x4BB48DA045CD58
• Base-36: 5TTGLFSWORC

Squares and roots of 21309143625616728

• 21309143625616728 squared (21309143625616728²) is 454079602057162031684498353425984
• 21309143625616728 cubed (21309143625616728³) is 9676047457698954797879285524707021163463700260352
• The square root of 21309143625616728 is 145976517.3773395925
• The cube root of 21309143625616728 is 277239.6438036395

Scales and comparisons

• 21,309,143,625,616,728 seconds is equal to 677,564,853 years, 40 weeks, 5 days, 23 hours, 18 minutes, 48 seconds.
• To count from 1 to 21,309,143,625,616,728 would take you about two billion, thirty-two million, six hundred ninety-four thousand, five hundred sixty-one 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 21309143625616728 cubic inches would be around 23103.3 feet tall.

Recreational maths with 21309143625616728

• 21309143625616728 backwards is 82761652634190312
• The number of decimal digits it has is: 17
• The sum of 21309143625616728's digits is 66
• More coming soon!