72161426505128806832

Names of 72161426505128806832

• Cardinal: 72161426505128806832 can be written as Seventy-two quintillion, one hundred sixty-one quadrillion, four hundred twenty-six trillion, five hundred five billion, one hundred twenty-eight million, eight hundred six thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 7.2161426505128806832 × 10¹⁹

Factors of 72161426505128806832

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 105628052379

Divisors of 72161426505128806832

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 7 8 14 16 28 56 112 6100043 12200086 24400172 42700301 48800344 85400602 97600688 170801204 341602408 683204816 105621952327 211243904654 422487809308 739353666289 844975618616 1478707332578 1689951237232 2957414665156 5914829330312 11829658660624 644298450938650061 1288596901877300122 2577193803754600244 4510089156570550427 5154387607509200488 9020178313141100854 10308775215018400976 18040356626282201708 36080713252564403416 72161426505128806832
• Sum of all divisors σ(n): 159786042028542203136
• Sum of proper divisors (its aliquot sum) s(n): 87624615523413396304
• 72161426505128806832 is an abundant number, because the sum of its proper divisors (87624615523413396304) is greater than itself. Its abundance is 15463189018284589472

Bases of 72161426505128806832

• Binary: 111110100101110000111000110001010000101011101010010000100110110000₂
• Hexadecimal: 0x3E970E3142BA909B0
• Base-36: F88YAT4J205GW

Squares and roots of 72161426505128806832

• 72161426505128806832 squared (72161426505128806832²) is 5207271475255106284506436355519969876224
• 72161426505128806832 cubed (72161426505128806832³) is 375764137853875010417466403900644922033516275949611845562368
• The square root of 72161426505128806832 is 8494788196.6020086775
• The cube root of 72161426505128806832 is 4163274.4056413791

Scales and comparisons

• 72,161,426,505,128,806,832 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 72,161,426,505,128,806,832 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 72161426505128806832 cubic inches would be around 346939.5 feet tall.

Recreational maths with 72161426505128806832

• 72161426505128806832 backwards is 23860882150562416127
• The number of decimal digits it has is: 20
• The sum of 72161426505128806832's digits is 77
• More coming soon!