21164161536

Names of 21164161536

• Cardinal: 21164161536 can be written as Twenty-one billion, one hundred sixty-four million, one hundred sixty-one thousand, five hundred thirty-six.

Scientific notation

• Scientific notation: 2.1164161536 × 10¹⁰

Factors of 21164161536

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1478

Divisors of 21164161536

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 67 72 84 96 98 112 126 128 134 144 147 168 192 196 201 224 252 256 268 288 294 336 384 392 402 441 448 469 504 512 536 576 588 603 672 768 784 804 882 896 938 1008 1072 1152 1176 1206 1344 1399 1407 1536 1568 1608 1764 1792 1876 2016 2144 2304 2352 2412 2688 2798 2814 3136 3216 3283 3528 3584 3752 4032 4197 4221 4288 4608 4704 4824 5376 5596 5628 6272 6432 6566 7056 7504 8064 8394 8442 8576 9408 9648 9793 9849 10752 11192 11256 12544 12591 12864 13132 14112 15008 16128 16788 16884 17152 18816 19296 19586 19698 22384 22512 25088 25182 25728 26264 28224 29379 29547 30016 32256 33576 33768 34304 37632 38592 39172 39396 44768 45024 50364 51456 52528 56448 58758 59094 60032 67152 67536 68551 75264 77184 78344 78792 88137 89536 90048 93733 100728 102912 105056 112896 117516 118188 120064 134304 135072 137102 154368 156688 157584 176274 179072 180096 187466 201456 205653 210112 225792 235032 236376 240128 268608 270144 274204 281199 308736 313376 315168 352548 358144 360192 374932 402912 411306 420224 470064 472752 537216 540288 548408 562398 616959 626752 630336 656131 705096 716288 720384 749864 805824 822612 840448 843597 940128 945504 1074432 1080576 1096816 1124796 1233918 1253504 1260672 1312262 1410192 1499728 1611648 1645224 1680896 1687194 1880256 1891008 1968393 2148864 2161152 2193632 2249592 2467836 2507008 2521344 2624524 2820384 2999456 3223296 3290448 3374388 3760512 3782016 3936786 4387264 4499184 4592917 4935672 5014016 5042688 5249048 5640768 5905179 5998912 6446592 6580896 6748776 7521024 7564032 7873572 8774528 8998368 9185834 9871344 10498096 11281536 11810358 11997824 13161792 13497552 13778751 15042048 15128064 15747144 17549056 17996736 18371668 19742688 20996192 22563072 23620716 23995648 26323584 26995104 27557502 31494288 35098112 35993472 36743336 39485376 41336253 41992384 45126144 47241432 47991296 52647168 53990208 55115004 62988576 71986944 73486672 78970752 82672506 83984768 94482864 105294336 107980416 110230008 125977152 143973888 146973344 157941504 165345012 167969536 188965728 215960832 220460016 251954304 293946688 315883008 330690024 335939072 377931456 431921664 440920032 503908608 587893376 661380048 755862912 881840064 1007817216 1175786752 1322760096 1511725824 1763680128 2351573504 2645520192 3023451648 3527360256 5291040384 7054720512 10582080768 21164161536
• Sum of all divisors σ(n): 72165693600
• Sum of proper divisors (its aliquot sum) s(n): 51001532064
• 21164161536 is an abundant number, because the sum of its proper divisors (51001532064) is greater than itself. Its abundance is 29837370528

Bases of 21164161536

• Binary: 10011101101011110110111101000000000₂
• Hexadecimal: 0x4ED7B7A00
• Base-36: 9Q0LFK0

Squares and roots of 21164161536

• 21164161536 squared (21164161536²) is 447921733521901879296
• 21164161536 cubed (21164161536³) is 9479887923742677567362517958656
• The square root of 21164161536 is 145479.0759387755
• The cube root of 21164161536 is 2766.0945599713

Scales and comparisons

• 21,164,161,536 seconds is equal to 672 years, 49 weeks, 4 days, 13 hours, 45 minutes, 36 seconds.
• To count from 1 to 21,164,161,536 would take you about one thousand, three hundred forty-five 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 21164161536 cubic inches would be around 230.5 feet tall.

Recreational maths with 21164161536

• 21164161536 backwards is 63516146112
• 21164161536 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21164161536's digits is 36
• More coming soon!