81020729038116

Names of 81020729038116

• Cardinal: 81020729038116 can be written as Eighty-one trillion, twenty billion, seven hundred twenty-nine million, thirty-eight thousand, one hundred sixteen.

Scientific notation

• Scientific notation: 8.1020729038116 × 10¹³

Factors of 81020729038116

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 296403

Divisors of 81020729038116

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 28 42 49 61 84 98 122 147 183 196 244 294 343 366 427 588 686 732 854 1029 1093 1281 1372 1708 2058 2186 2562 2989 3279 4116 4372 5124 5978 6558 7651 8967 11956 13116 15302 17934 20923 22953 30604 35868 41846 45906 53557 62769 66673 83692 91812 107114 125538 133346 160671 200019 214228 251076 266692 295237 321342 374899 400038 466711 590474 642684 749798 800076 885711 933422 1124697 1180948 1400133 1499596 1771422 1866844 2066659 2249394 2800266 3266977 3542844 4133318 4498788 5600532 6199977 6533954 8266636 9800931 12399954 13067908 14466613 18009457 19601862 22868839 24799908 28933226 36018914 39203724 43399839 45737678 54028371 57866452 68606517 72037828 86799678 91475356 101266291 108056742 126066199 137213034 173599356 202532582 216113484 252132398 274426068 303798873 322694041 378198597 405065164 504264796 607597746 645388082 756397194 882463393 968082123 1215195492 1290776164 1512794388 1764926786 1936164246 2258858287 2647390179 3529853572 3872328492 4517716574 5294780358 6177243751 6776574861 9035433148 10589560716 12354487502 13553149722 15812008009 18531731253 19684336501 24708975004 27106299444 31624016018 37063462506 39368673002 47436024027 59053009503 63248032036 74126925012 78737346004 94872048054 110684056063 118106019006 137790355507 189744096108 221368112126 236212038012 275580711014 332052168189 413371066521 442736224252 551161422028 664104336378 826742133042 964532488549 1328208672756 1653484266084 1929064977098 2893597465647 3858129954196 5787194931294 6751727419843 11574389862588 13503454839686 20255182259529 27006909679372 40510364519058 81020729038116
• Sum of all divisors σ(n): 224284514316800
• Sum of proper divisors (its aliquot sum) s(n): 143263785278684
• 81020729038116 is an abundant number, because the sum of its proper divisors (143263785278684) is greater than itself. Its abundance is 62243056240568

Bases of 81020729038116

• Binary: 10010011011000000011011110001100001010100100100₂
• Hexadecimal: 0x49B01BC61524
• Base-36: SPWEQ6C6C

Squares and roots of 81020729038116

• 81020729038116 squared (81020729038116²) is 6564358533867813214580829456
• 81020729038116 cubed (81020729038116³) is 531849114081548506158077800436756319544896
• The square root of 81020729038116 is 9001151.5395595913
• The cube root of 81020729038116 is 43271.1777137125

Scales and comparisons

• 81,020,729,038,116 seconds is equal to 2,576,208 years, 29 weeks, 4 days, 10 hours, 8 minutes, 36 seconds.
• To count from 1 to 81,020,729,038,116 would take you about six million, four hundred forty thousand, five hundred twenty-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 81020729038116 cubic inches would be around 3605.9 feet tall.

Recreational maths with 81020729038116

• 81020729038116 backwards is 61183092702018
• The number of decimal digits it has is: 14
• The sum of 81020729038116's digits is 48
• More coming soon!