21641658012

Names of 21641658012

• Cardinal: 21641658012 can be written as Twenty-one billion, six hundred forty-one million, six hundred fifty-eight thousand and twelve.

Scientific notation

• Scientific notation: 2.1641658012 × 10¹⁰

Factors of 21641658012

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 939

Divisors of 21641658012

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 36 37 39 52 74 78 111 117 127 148 156 169 222 234 254 333 338 381 444 468 481 507 508 666 676 757 762 962 1014 1143 1332 1443 1514 1521 1524 1651 1924 2028 2271 2286 2886 3028 3042 3302 4329 4542 4572 4699 4953 5772 6084 6253 6604 6813 8658 9084 9398 9841 9906 12506 13626 14097 14859 17316 18759 18796 19682 19812 21463 25012 27252 28009 28194 29523 29718 37518 39364 42291 42926 56018 56277 56388 59046 59436 61087 64389 75036 84027 84582 85852 88569 96139 112036 112554 118092 122174 127933 128778 168054 169164 177138 183261 192278 193167 225108 244348 252081 255866 257556 288417 336108 354276 364117 366522 383799 384556 386334 504162 511732 549783 576834 728234 733044 767598 772668 794131 865251 1008324 1092351 1099566 1151397 1153668 1249807 1456468 1535196 1588262 1730502 2184702 2199132 2302794 2382393 2499614 3176524 3277053 3461004 3557143 3749421 4369404 4605588 4733521 4764786 4999228 6554106 7114286 7147179 7498842 9467042 9529572 10671429 11248263 13108212 14200563 14228572 14294358 14997684 16247491 18934084 21342858 22496526 28401126 28588716 32014287 32494982 42601689 42685716 44993052 46242859 48742473 56802252 64028574 64989964 85203378 92485718 97484946 128057148 138728577 146227419 170406756 184971436 194969892 277457154 292454838 416185731 554914308 584909676 601157167 832371462 1202314334 1664742924 1803471501 2404628668 3606943002 5410414503 7213886004 10820829006 21641658012
• Sum of all divisors σ(n): 61398145536
• Sum of proper divisors (its aliquot sum) s(n): 39756487524
• 21641658012 is an abundant number, because the sum of its proper divisors (39756487524) is greater than itself. Its abundance is 18114829512

Bases of 21641658012

• Binary: 10100001001111100010111111010011100₂
• Hexadecimal: 0x509F17E9C
• Base-36: 9XWVU70

Squares and roots of 21641658012

• 21641658012 squared (21641658012²) is 468361361508363792144
• 21641658012 cubed (21641658012³) is 10136116411798709667263900257728
• The square root of 21641658012 is 147111.0397352965
• The cube root of 21641658012 is 2786.7425149019

Scales and comparisons

• 21,641,658,012 seconds is equal to 688 years, 7 weeks, 1 day, 3 hours, 40 minutes, 12 seconds.
• To count from 1 to 21,641,658,012 would take you about one thousand, three hundred seventy-six 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 21641658012 cubic inches would be around 232.2 feet tall.

Recreational maths with 21641658012

• 21641658012 backwards is 21085614612
• 21641658012 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21641658012's digits is 36
• More coming soon!