81612340732664

Names of 81612340732664

• Cardinal: 81612340732664 can be written as Eighty-one trillion, six hundred twelve billion, three hundred forty million, seven hundred thirty-two thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 8.1612340732664 × 10¹³

Factors of 81612340732664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 427

Divisors of 81612340732664

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 7 8 14 28 49 56 71 98 142 196 284 343 347 392 497 568 686 694 994 1372 1388 1988 2401 2429 2744 2776 3479 3976 4802 4858 5041 6958 9604 9716 10082 13916 16807 17003 19208 19432 20164 24353 24637 27832 33614 34006 35287 40328 48706 49274 67228 68012 70574 97412 98548 119021 120409 134456 136024 141148 170471 172459 194824 197096 238042 240818 247009 282296 340942 344918 476084 481636 494018 681884 689836 833147 842863 952168 963272 988036 1193297 1207213 1363768 1379672 1666294 1685726 1729063 1749227 1976072 2386594 2414426 3332588 3371452 3458126 3498454 4773188 4828852 5832029 5900041 6665176 6742904 6916252 6996908 8450491 8549039 9546376 9657704 11664058 11800082 12103441 12244589 13832504 13993816 16900982 17098078 23328116 23600164 24206882 24489178 33801964 34196156 41300287 46656232 47200328 48413764 48978356 59153437 59843273 67603928 68392312 82600574 84724087 85712123 96827528 97956712 118306874 119686546 165201148 169448174 171424246 236613748 239373092 289102009 330402296 338896348 342848492 414074059 418902911 473227496 478746184 578204018 599984861 606981769 677792696 685696984 828148118 837805822 1156408036 1199969722 1213963538 1656296236 1675611644 2023714063 2312816072 2399939444 2427927076 2932320377 3312592472 3351223288 4047428126 4199894027 4248872383 4799878888 4855854152 5864640754 8094856252 8399788054 8497744766 11729281508 16189712504 16799576108 16995489532 20526242639 23458563016 29399258189 29742106681 33599152216 33990979064 41052485278 58798516378 59484213362 82104970556 117597032756 118968426724 143683698473 164209941112 208194746767 235194065512 237936853448 287367396946 416389493534 574734793892 832778987068 1149469587784 1457363227369 1665557974136 2914726454738 5829452909476 10201542591583 11658905818952 20403085183166 40806170366332 81612340732664
• Sum of all divisors σ(n): 181598670718920
• Sum of proper divisors (its aliquot sum) s(n): 99986329986256
• 81612340732664 is an abundant number, because the sum of its proper divisors (99986329986256) is greater than itself. Its abundance is 18373989253592

Bases of 81612340732664

• Binary: 10010100011100111011010100101000010001011111000₂
• Hexadecimal: 0x4A39DA9422F8
• Base-36: SXG6WI588

Squares and roots of 81612340732664

• 81612340732664 squared (81612340732664²) is 6660574159864447484316536896
• 81612340732664 cubed (81612340732664³) is 543585047810034548265111428428187828370944
• The square root of 81612340732664 is 9033954.8777190603
• The cube root of 81612340732664 is 43376.2441456465

Scales and comparisons

• 81,612,340,732,664 seconds is equal to 2,595,019 years, 51 weeks, 3 days, 23 hours, 57 minutes, 44 seconds.
• To count from 1 to 81,612,340,732,664 would take you about six million, four hundred eighty-seven thousand, five hundred forty-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 81612340732664 cubic inches would be around 3614.7 feet tall.

Recreational maths with 81612340732664

• 81612340732664 backwards is 46623704321618
• The number of decimal digits it has is: 14
• The sum of 81612340732664's digits is 53
• More coming soon!