81313418970

Names of 81313418970

• Cardinal: 81313418970 can be written as Eighty-one billion, three hundred thirteen million, four hundred eighteen thousand, nine hundred seventy.

Scientific notation

• Scientific notation: 8.131341897 × 10¹⁰

Factors of 81313418970

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 107863

Divisors of 81313418970

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 19 21 27 30 35 38 42 45 49 54 57 63 70 81 90 95 98 105 114 126 133 135 147 162 171 189 190 210 245 266 270 285 294 315 342 378 399 405 441 490 513 567 570 630 665 735 798 810 855 882 931 945 1026 1134 1197 1323 1330 1470 1539 1710 1862 1890 1995 2205 2394 2565 2646 2793 2835 3078 3591 3969 3990 4410 4655 5130 5586 5670 5985 6615 7182 7695 7938 8379 9310 10773 11970 13230 13965 15390 16758 17955 19845 21546 25137 27930 35910 39690 41895 50274 53865 75411 83790 107730 107827 125685 150822 215654 251370 323481 377055 539135 646962 754110 754789 970443 1078270 1509578 1617405 1940886 2048713 2264367 2911329 3234810 3773945 4097426 4528734 4852215 5283523 5822658 6146139 6793101 7547890 8733987 9704430 10243565 10567046 11321835 12292278 13586202 14340991 14556645 15850569 17467974 18438417 20379303 20487130 22643670 26417615 28681982 29113290 30730695 31701138 33965505 36876834 40758606 43022973 43669935 47551707 52835230 55315251 61137909 61461390 67931010 71704955 79252845 86045946 87339870 92192085 95103414 100386937 101896515 110630502 122275818 129068919 142655121 143409910 158505690 165945753 184384170 200773874 203793030 215114865 237758535 258137838 276576255 285310242 301160811 305689545 331891506 387206757 427965363 430229730 475517070 501934685 553152510 602321622 611379090 645344595 713275605 774413514 829728765 855930726 903482433 1003869370 1161620271 1290689190 1426551210 1505804055 1659457530 1806964866 1936033785 2139826815 2323240542 2710447299 3011608110 3872067570 4279653630 4517412165 5420894598 5808101355 8131341897 9034824330 11616202710 13552236495 16262683794 27104472990 40656709485 81313418970
• Sum of all divisors σ(n): 267728297760
• Sum of proper divisors (its aliquot sum) s(n): 186414878790
• 81313418970 is an abundant number, because the sum of its proper divisors (186414878790) is greater than itself. Its abundance is 105101459820

Bases of 81313418970

• Binary: 1001011101110101010000100111011011010₂
• Hexadecimal: 0x12EEA84EDA
• Base-36: 11CRWRMI

Squares and roots of 81313418970

• 81313418970 squared (81313418970²) is 6611872104590755860900
• 81313418970 cubed (81313418970³) is 537633926616643791706344741273000
• The square root of 81313418970 is 285155.0788080057
• The cube root of 81313418970 is 4332.3221257765

Scales and comparisons

• 81,313,418,970 seconds is equal to 2,585 years, 26 weeks, 5 days, 12 hours, 49 minutes, 30 seconds.
• To count from 1 to 81,313,418,970 would take you about five thousand, one hundred seventy-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 81313418970 cubic inches would be around 361 feet tall.

Recreational maths with 81313418970

• 81313418970 backwards is 07981431318
• 81313418970 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81313418970's digits is 45
• More coming soon!