81201021468

Names of 81201021468

• Cardinal: 81201021468 can be written as Eighty-one billion, two hundred one million, twenty-one thousand, four hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1201021468 × 10¹⁰

Factors of 81201021468

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1765

Divisors of 81201021468

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 12 14 19 21 28 38 42 57 76 84 114 133 181 228 266 362 399 532 543 724 798 1086 1267 1553 1596 2172 2534 3106 3439 3801 4659 5068 6212 6878 7602 9318 10317 10871 13756 15204 18636 20634 21742 24073 29507 32613 32761 41268 43484 48146 59014 65226 65522 72219 88521 96292 98283 118028 130452 131044 144438 177042 196566 206549 229327 281093 288876 354084 393132 413098 458654 562186 619647 622459 687981 826196 843279 917308 1124372 1239294 1244918 1375962 1686558 1867377 1967651 2478588 2489836 2751924 3373116 3734754 3935302 4357213 5340767 5902953 7469508 7870604 8714426 10681534 11805906 13071639 16022301 17428852 21363068 23611812 26143278 32044602 37385369 50877833 52286556 64089204 74770738 101755666 112156107 149541476 152633499 203511332 224312214 305266998 356144831 448624428 610533996 712289662 966678827 1068434493 1424579324 1933357654 2136868986 2900036481 3866715308 4273737972 5800072962 6766751789 11600145924 13533503578 20300255367 27067007156 40600510734 81201021468
• Sum of all divisors σ(n): 229346530560
• Sum of proper divisors (its aliquot sum) s(n): 148145509092
• 81201021468 is an abundant number, because the sum of its proper divisors (148145509092) is greater than itself. Its abundance is 66944487624

Bases of 81201021468

• Binary: 1001011100111111101010100001000011100₂
• Hexadecimal: 0x12E7F5421C
• Base-36: 11AWZP5O

Squares and roots of 81201021468

• 81201021468 squared (81201021468²) is 6593605887446596875024
• 81201021468 cubed (81201021468³) is 535407533218082304552365537015232
• The square root of 81201021468 is 284957.9292948347
• The cube root of 81201021468 is 4330.3250518779

Scales and comparisons

• 81,201,021,468 seconds is equal to 2,581 years, 48 weeks, 6 days, 15 hours, 17 minutes, 48 seconds.
• To count from 1 to 81,201,021,468 would take you about five thousand, one hundred sixty-three 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 81201021468 cubic inches would be around 360.9 feet tall.

Recreational maths with 81201021468

• 81201021468 backwards is 86412010218
• The number of decimal digits it has is: 11
• The sum of 81201021468's digits is 33
• More coming soon!