81239783328120

Names of 81239783328120

• Cardinal: 81239783328120 can be written as Eighty-one trillion, two hundred thirty-nine billion, seven hundred eighty-three million, three hundred twenty-eight thousand, one hundred twenty.

Scientific notation

• Scientific notation: 8.123978332812 × 10¹³

Factors of 81239783328120

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 5610

Divisors of 81239783328120

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 151 302 453 604 755 906 1208 1510 1812 2265 3020 3624 4530 5449 6040 9060 10898 16347 18120 21796 22801 27245 32694 43592 45602 54490 65388 68403 81735 91204 108980 114005 130776 136806 163470 182408 217960 228010 273612 326940 342015 456020 547224 653880 684030 822799 912040 1368060 1645598 2468397 2736120 3291196 4113995 4936794 6582392 8227990 9873588 12341985 16455980 19747176 24683970 29691601 32911960 49367940 59383202 89074803 98735880 118766404 124242649 148458005 178149606 237532808 248485298 296916010 356299212 372727947 445374015 496970596 593832020 621213245 712598424 745455894 890748030 993941192 1187664040 1242426490 1490911788 1781496060 1863639735 2484852980 2981823576 3562992120 3727279470 4483431751 4969705960 7454558940 8966863502 13450295253 14909117880 17933727004 22417158755 26900590506 35867454008 44834317510 53801181012 67251476265 89668635020 107602362024 134502952530 179337270040 269005905060 538011810120 676998194401 1353996388802 2030994583203 2707992777604 3384990972005 4061989166406 5415985555208 6769981944010 8123978332812 10154972916015 13539963888020 16247956665624 20309945832030 27079927776040 40619891664060 81239783328120
• Sum of all divisors σ(n): 245389108177080
• Sum of proper divisors (its aliquot sum) s(n): 164149324848960
• 81239783328120 is an abundant number, because the sum of its proper divisors (164149324848960) is greater than itself. Its abundance is 82909541520840

Bases of 81239783328120

• Binary: 10010011110001100011100011011010100100101111000₂
• Hexadecimal: 0x49E31C6D4978
• Base-36: SSP1HG03C

Squares and roots of 81239783328120

• 81239783328120 squared (81239783328120²) is 6599902395199884303582734400
• 81239783328120 cubed (81239783328120³) is 536174640572778816361153502894202011328000
• The square root of 81239783328120 is 9013311.4518538635
• The cube root of 81239783328120 is 43310.1397897769

Scales and comparisons

• 81,239,783,328,120 seconds is equal to 2,583,173 years, 42 weeks, 4 days, 2 minutes.
• To count from 1 to 81,239,783,328,120 would take you about six million, four hundred fifty-seven thousand, nine hundred thirty-four 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 81239783328120 cubic inches would be around 3609.2 feet tall.

Recreational maths with 81239783328120

• 81239783328120 backwards is 02182338793218
• The number of decimal digits it has is: 14
• The sum of 81239783328120's digits is 57
• More coming soon!