21391579244028816

Names of 21391579244028816

• Cardinal: 21391579244028816 can be written as Twenty-one quadrillion, three hundred ninety-one trillion, five hundred seventy-nine billion, two hundred forty-four million, twenty-eight thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 2.1391579244028816 × 10¹⁶

Factors of 21391579244028816

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 5121

Divisors of 21391579244028816

• Number of divisors d(n): 225
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 324 432 648 983 1296 1966 2949 3932 4133 5898 7864 8266 8847 11796 12399 15728 16532 17694 23592 24798 26541 33064 35388 37197 47184 49596 53082 66128 70776 74394 79623 99192 106164 111591 141552 148788 159246 198384 212328 223182 297576 318492 334773 424656 446364 595152 636984 669546 892728 966289 1273968 1339092 1785456 1932578 2678184 2898867 3865156 4062739 5356368 5797734 7730312 8125478 8696601 11595468 12188217 15460624 16250956 17081689 17393202 23190936 24376434 26089803 32501912 34163378 34786404 36564651 46381872 48752868 51245067 52179606 65003824 68326756 69572808 73129302 78269409 97505736 102490134 104359212 109693953 136653512 139145616 146258604 153735201 156538818 195011472 204980268 208718424 219387906 273307024 292517208 307470402 313077636 329081859 409960536 417436848 438775812 461205603 585034416 614940804 626155272 658163718 819921072 877551624 922411206 1229881608 1252310544 1316327436 1383616809 1755103248 1844822412 2459763216 2632654872 2767233618 3689644824 3993672437 5265309744 5534467236 7379289648 7987344874 11068934472 11981017311 15974689748 16791300287 22137868944 23962034622 31949379496 33582600574 35943051933 47924069244 50373900861 63898758992 67165201148 71886103866 95848138488 100747801722 107829155799 134330402296 143772207732 151121702583 191696276976 201495603444 215658311598 268660804592 287544415464 302243405166 323487467397 402991206888 431316623196 453365107749 575088830928 604486810332 646974934794 805982413776 862633246392 906730215498 1208973620664 1293949869588 1360095323247 1725266492784 1813460430996 2417947241328 2587899739176 2720190646494 3626920861992 5175799478352 5440381292988 7253841723984 10880762585976 16505848182121 21761525171952 33011696364242 49517544546363 66023392728484 99035089092726 132046785456968 148552633639089 198070178185452 264093570913936 297105267278178 396140356370904 445657900917267 594210534556356 792280712741808 891315801834534 1188421069112712 1336973702751801 1782631603669068 2376842138225424 2673947405503602 3565263207338136 5347894811007204 7130526414676272 10695789622014408 21391579244028816
• Sum of all divisors σ(n): 61991483920316929
• Sum of proper divisors (its aliquot sum) s(n): 40599904676288113
• 21391579244028816 is an abundant number, because the sum of its proper divisors (40599904676288113) is greater than itself. Its abundance is 19208325432259297

Bases of 21391579244028816

• Binary: 1001011111111111000011100101010000001100110001110010000₂
• Hexadecimal: 0x4BFF872A066390
• Base-36: 5UMOJU7OP00

Squares and roots of 21391579244028816

• 21391579244028816 squared (21391579244028816²) is 457599662553564451030991038361856
• 21391579244028816 cubed (21391579244028816³) is 9788779443555419540766945810192395608678299242496
• 21391579244028816 is a perfect square number. Its square root is 146258604
• The cube root of 21391579244028816 is 277596.6894903593

Scales and comparisons

• 21,391,579,244,028,816 seconds is equal to 680,186,051 years, 23 weeks, 6 days, 19 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,391,579,244,028,816 would take you about two billion, forty million, five hundred fifty-eight thousand, one hundred fifty-four 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 21391579244028816 cubic inches would be around 23133.1 feet tall.

Recreational maths with 21391579244028816

• 21391579244028816 backwards is 61882044297519312
• 21391579244028816 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21391579244028816's digits is 72
• More coming soon!