81716864004

Names of 81716864004

• Cardinal: 81716864004 can be written as Eighty-one billion, seven hundred sixteen million, eight hundred sixty-four thousand and four.

Scientific notation

• Scientific notation: 8.1716864004 × 10¹⁰

Factors of 81716864004

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1176

Divisors of 81716864004

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 37 41 74 82 111 123 148 164 222 246 333 369 444 492 666 738 1093 1332 1369 1476 1517 2186 2738 3034 3279 4107 4372 4551 5476 6068 6558 8214 9102 9837 12321 13116 13653 16428 18204 19674 24642 27306 39348 40441 44813 49284 50653 54612 56129 80882 89626 101306 112258 121323 134439 151959 161764 168387 179252 202612 224516 242646 268878 303918 336774 363969 403317 455877 485292 505161 537756 607836 673548 727938 806634 911754 1010322 1455876 1496317 1613268 1658081 1823508 2020644 2076773 2992634 3316162 4153546 4488951 4974243 5985268 6230319 6632324 8307092 8977902 9948486 12460638 13466853 14922729 17955804 18690957 19896972 24921276 26933706 29845458 37381914 53867412 55363729 59690916 61348997 74763828 110727458 122697994 166091187 184046991 221454916 245395988 332182374 368093982 498273561 552140973 664364748 736187964 996547122 1104281946 1993094244 2208563892 2269912889 4539825778 6809738667 9079651556 13619477334 20429216001 27238954668 40858432002 81716864004
• Sum of all divisors σ(n): 217676812080
• Sum of proper divisors (its aliquot sum) s(n): 135959948076
• 81716864004 is an abundant number, because the sum of its proper divisors (135959948076) is greater than itself. Its abundance is 54243084072

Bases of 81716864004

• Binary: 1001100000110101101000110010000000100₂
• Hexadecimal: 0x1306B46404
• Base-36: 11JG3ZT0

Squares and roots of 81716864004

• 81716864004 squared (81716864004²) is 6677645862648230912016
• 81716864004 cubed (81716864004³) is 545676278824898748728400361472064
• The square root of 81716864004 is 285861.6168778173
• The cube root of 81716864004 is 4339.4753980219

Scales and comparisons

• 81,716,864,004 seconds is equal to 2,598 years, 17 weeks, 6 days, 53 minutes, 24 seconds.
• To count from 1 to 81,716,864,004 would take you about five thousand, one hundred ninety-six 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 81716864004 cubic inches would be around 361.6 feet tall.

Recreational maths with 81716864004

• 81716864004 backwards is 40046861718
• The number of decimal digits it has is: 11
• The sum of 81716864004's digits is 45
• More coming soon!