81190016000

Names of 81190016000

• Cardinal: 81190016000 can be written as Eighty-one billion, one hundred ninety million, sixteen thousand.

Scientific notation

• Scientific notation: 8.1190016 × 10¹⁰

Factors of 81190016000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 8769

Divisors of 81190016000

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 73 80 100 125 128 146 160 200 250 256 292 320 365 400 500 512 584 640 730 800 1000 1024 1168 1280 1460 1600 1825 2000 2336 2560 2920 3200 3650 4000 4672 5120 5840 6400 7300 8000 8689 9125 9344 11680 12800 14600 16000 17378 18250 18688 23360 25600 29200 32000 34756 36500 37376 43445 46720 58400 64000 69512 73000 74752 86890 93440 116800 128000 139024 146000 173780 186880 217225 233600 278048 292000 347560 373760 434450 467200 556096 584000 634297 695120 868900 934400 1086125 1112192 1168000 1268594 1390240 1737800 1868800 2172250 2224384 2336000 2537188 2780480 3171485 3475600 4344500 4448768 4672000 5074376 5560960 6342970 6951200 8689000 8897536 9344000 10148752 11121920 12685940 13902400 15857425 17378000 20297504 22243840 25371880 27804800 31714850 34756000 40595008 44487680 50743760 55609600 63429700 69512000 79287125 81190016 101487520 111219200 126859400 139024000 158574250 162380032 202975040 222438400 253718800 278048000 317148500 324760064 405950080 507437600 556096000 634297000 649520128 811900160 1014875200 1112192000 1268594000 1623800320 2029750400 2537188000 3247600640 4059500800 5074376000 8119001600 10148752000 16238003200 20297504000 40595008000 81190016000
• Sum of all divisors σ(n): 205349635920
• Sum of proper divisors (its aliquot sum) s(n): 124159619920
• 81190016000 is an abundant number, because the sum of its proper divisors (124159619920) is greater than itself. Its abundance is 42969603920

Bases of 81190016000

• Binary: 1001011100111010011010101010000000000₂
• Hexadecimal: 0x12E74D5400
• Base-36: 11AQFTA8

Squares and roots of 81190016000

• 81190016000 squared (81190016000²) is 6591818698080256000000
• 81190016000 cubed (81190016000³) is 535189865566235153924096000000000
• The square root of 81190016000 is 284938.6179513055
• The cube root of 81190016000 is 4330.1294081691

Scales and comparisons

• 81,190,016,000 seconds is equal to 2,581 years, 30 weeks, 5 days, 6 hours, 13 minutes, 20 seconds.
• To count from 1 to 81,190,016,000 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 81190016000 cubic inches would be around 360.8 feet tall.

Recreational maths with 81190016000

• 81190016000 backwards is 00061009118
• The number of decimal digits it has is: 11
• The sum of 81190016000's digits is 26
• More coming soon!