81729574167916012

Names of 81729574167916012

• Cardinal: 81729574167916012 can be written as Eighty-one quadrillion, seven hundred twenty-nine trillion, five hundred seventy-four billion, one hundred sixty-seven million, nine hundred sixteen thousand and twelve.

Scientific notation

• Scientific notation: 8.1729574167916012 × 10¹⁶

Factors of 81729574167916012

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 45414

Divisors of 81729574167916012

• Number of divisors d(n): 162
• Complete list of divisors:
  1 2 4 13 26 37 43 52 74 86 148 169 172 338 481 559 676 962 1118 1369 1591 1924 2236 2738 3182 5476 6253 6364 7267 12506 14534 17797 20683 25012 29068 35594 41366 45319 58867 71188 82732 90638 117734 181276 231361 235468 268879 462722 537758 589147 765271 925444 1075516 1178294 1530542 1676803 1948717 2356588 3061084 3353606 3897434 6707212 7658911 7794868 9948523 15317822 19897046 21798439 25333321 30635644 39794092 43596878 50666642 62041711 72102529 87193756 101333284 124083422 144205058 248166844 283379707 288410116 329333173 566759414 658666346 806542243 937332877 1133518828 1317332692 1613084486 1874665754 2053811761 2667793573 3226168972 3749331508 4107623522 5335587146 8215247044 10485049159 10671174292 12185327401 20970098318 24370654802 26699552893 34681316449 41940196636 48741309604 53399105786 69362632898 75991035157 88313905723 106798211572 138725265796 151982070314 176627811446 303964140628 347094187609 353255622892 450857113837 694188375218 901714227674 987883457041 1148080774399 1388376750436 1803428455348 1975766914082 2296161548798 2811668300809 3267614511751 3951533828164 4592323097596 5623336601618 6535229023502 11246673203236 12842484941533 13070458047004 14925050067187 25684969883066 29850100134374 36551687910517 42478988652763 51369939766132 59700200268748 73103375821034 84957977305526 120901736934787 146206751642068 169915954611052 241803473869574 475171942836721 483606947739148 552226852485919 950343885673442 1104453704971838 1571722580152231 1900687771346884 2208907409943676 3143445160304462 6286890320608924 20432393541979003 40864787083958006 81729574167916012
• Sum of all divisors σ(n): 162879385922471988
• Sum of proper divisors (its aliquot sum) s(n): 81149811754555976
• 81729574167916012 is a deficient number, because the sum of its proper divisors (81149811754555976) is less than itself. Its deficiency is 579762413360036

Bases of 81729574167916012

• Binary: 100100010010111001001110101011011111011000010110111101100₂
• Hexadecimal: 0x1225C9D5BEC2DEC
• Base-36: MCQPS1KI7E4

Squares and roots of 81729574167916012

• 81729574167916012 squared (81729574167916012²) is 6679723293668884285273563085984144
• 81729574167916012 cubed (81729574167916012³) is 545930940351067306427086682152216502303526555713728
• The square root of 81729574167916012 is 285883847.3364943575
• The cube root of 81729574167916012 is 433970.0372327751

Scales and comparisons

• 81,729,574,167,916,012 seconds is equal to 2,598,747,652 years, 19 weeks, 23 hours, 46 minutes, 52 seconds.
• To count from 1 to 81,729,574,167,916,012 would take you about seven billion, seven hundred ninety-six million, two hundred forty-two thousand, nine hundred fifty-seven 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 81729574167916012 cubic inches would be around 36164.2 feet tall.

Recreational maths with 81729574167916012

• 81729574167916012 backwards is 21061976147592718
• The number of decimal digits it has is: 17
• The sum of 81729574167916012's digits is 76
• More coming soon!