81666901616923998

Names of 81666901616923998

• Cardinal: 81666901616923998 can be written as Eighty-one quadrillion, six hundred sixty-six trillion, nine hundred one billion, six hundred sixteen million, nine hundred twenty-three thousand, nine hundred ninety-eight.

Scientific notation

• Scientific notation: 8.1666901616923998 × 10¹⁶

Factors of 81666901616923998

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2428482171

Divisors of 81666901616923998

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 6 9 18 27 54 81 162 243 486 69197 138394 207591 415182 622773 1245546 1868319 3736638 5604957 11209914 16814871 33629742 2428412969 4856825938 7285238907 14570477814 21855716721 43711433442 65567150163 131134300326 196701450489 393402900978 590104351467 1180208702934 168038892215893 336077784431786 504116676647679 1008233353295358 1512350029943037 3024700059886074 4537050089829111 9074100179658222 13611150269487333 27222300538974666 40833450808461999 81666901616923998
• Sum of all divisors σ(n): 183501122202281520
• Sum of proper divisors (its aliquot sum) s(n): 101834220585357522
• 81666901616923998 is an abundant number, because the sum of its proper divisors (101834220585357522) is greater than itself. Its abundance is 20167318968433524

Bases of 81666901616923998

• Binary: 100100010001000111001110101000100110010001001010101011110₂
• Hexadecimal: 0x122239D44C8955E
• Base-36: MC4I0O5SVVI

Squares and roots of 81666901616923998

• 81666901616923998 squared (81666901616923998²) is 6669482819708343518975615308304004
• 81666901616923998 cubed (81666901616923998³) is 544675997272886144764957674481173033080512747087992
• The square root of 81666901616923998 is 285774214.4017265915
• The cube root of 81666901616923998 is 433859.0820304285

Scales and comparisons

• 81,666,901,616,923,998 seconds is equal to 2,596,754,859 years, 5 weeks, 3 days, 9 hours, 33 minutes, 18 seconds.
• To count from 1 to 81,666,901,616,923,998 would take you about seven billion, seven hundred ninety million, two hundred sixty-four thousand, five hundred seventy-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 81666901616923998 cubic inches would be around 36154.9 feet tall.

Recreational maths with 81666901616923998

• 81666901616923998 backwards is 89932961610966618
• The number of decimal digits it has is: 17
• The sum of 81666901616923998's digits is 90
• More coming soon!