81948696637840000

Names of 81948696637840000

• Cardinal: 81948696637840000 can be written as Eighty-one quadrillion, nine hundred forty-eight trillion, six hundred ninety-six billion, six hundred thirty-seven million, eight hundred forty thousand.

Scientific notation

• Scientific notation: 8.194869663784 × 10¹⁶

Factors of 81948696637840000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 77129

Divisors of 81948696637840000

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 173 200 250 320 346 400 500 625 640 692 800 865 1000 1250 1384 1600 1730 2000 2500 2768 3200 3460 4000 4325 5000 5536 6920 8000 8650 10000 11072 13840 16000 17300 20000 21625 22144 27680 34600 40000 43250 55360 69200 76949 80000 86500 108125 110720 138400 153898 173000 216250 276800 307796 346000 384745 432500 553600 615592 692000 769490 865000 1231184 1384000 1538980 1730000 1923725 2462368 2768000 3077960 3460000 3847450 4924736 6155920 6920000 7694900 9618625 9849472 12311840 13312177 13840000 15389800 19237250 24623680 26624354 30779600 38474500 48093125 49247360 53248708 61559200 66560885 76949000 96186250 106497416 123118400 133121770 153898000 192372500 212994832 246236800 266243540 307796000 332804425 384745000 425989664 532487080 615592000 665608850 769490000 851979328 1064974160 1231184000 1331217700 1538980000 1664022125 1703958656 2129948320 2662435400 3077960000 3328044250 4259896640 5324870800 5921148601 6155920000 6656088500 8320110625 8519793280 10649741600 11842297202 13312177000 16640221250 21299483200 23684594404 26624354000 29605743005 33280442500 42598966400 47369188808 53248708000 59211486010 66560885000 94738377616 106497416000 118422972020 133121770000 148028715025 189476755232 212994832000 236845944040 266243540000 296057430050 378953510464 473691888080 532487080000 592114860100 740143575125 757907020928 947383776160 1024358707973 1064974160000 1184229720200 1480287150250 1894767552320 2048717415946 2368459440400 2960574300500 3700717875625 3789535104640 4097434831892 4736918880800 5121793539865 5921148601000 7401435751250 8194869663784 9473837761600 10243587079730 11842297202000 14802871502500 16389739327568 18947675523200 20487174159460 23684594404000 25608967699325 29605743005000 32779478655136 40974348318920 47369188808000 51217935398650 59211486010000 65558957310272 81948696637840 94738377616000 102435870797300 118422972020000 128044838496625 131117914620544 163897393275680 204871741594600 236845944040000 256089676993250 327794786551360 409743483189200 473691888080000 512179353986500 640224192483125 655589573102720 819486966378400 1024358707973000 1280448384966250 1638973932756800 2048717415946000 2560896769932500 3277947865513600 4097434831892000 5121793539865000 8194869663784000 10243587079730000 16389739327568000 20487174159460000 40974348318920000 81948696637840000
• Sum of all divisors σ(n): 205188051382036470
• Sum of proper divisors (its aliquot sum) s(n): 123239354744196470
• 81948696637840000 is an abundant number, because the sum of its proper divisors (123239354744196470) is greater than itself. Its abundance is 41290658106356470

Bases of 81948696637840000

• Binary: 100100011001000111110011111001000111001111001101010000000₂
• Hexadecimal: 0x12323E7C8E79A80
• Base-36: MEWDZILIV0G

Squares and roots of 81948696637840000

• 81948696637840000 squared (81948696637840000²) is 6715588880640728920119865600000000
• 81948696637840000 cubed (81948696637840000³) is 550333755924078591121193684024512674304000000000000
• The square root of 81948696637840000 is 286266827.6937444947
• The cube root of 81948696637840000 is 434357.5254035835

Scales and comparisons

• 81,948,696,637,840,000 seconds is equal to 2,605,715,069 years, 6 weeks, 2 days, 4 hours, 26 minutes, 40 seconds.
• To count from 1 to 81,948,696,637,840,000 would take you about seven billion, eight hundred seventeen million, one hundred forty-five thousand, two hundred seven 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 81948696637840000 cubic inches would be around 36196.5 feet tall.

Recreational maths with 81948696637840000

• 81948696637840000 backwards is 00004873669684918
• The number of decimal digits it has is: 17
• The sum of 81948696637840000's digits is 79
• More coming soon!