81367716331520

Names of 81367716331520

• Cardinal: 81367716331520 can be written as Eighty-one trillion, three hundred sixty-seven billion, seven hundred sixteen million, three hundred thirty-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.136771633152 × 10¹³

Factors of 81367716331520

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 7886

Divisors of 81367716331520

• Number of divisors d(n): 114
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2048 2560 4096 5120 7879 8192 10240 15758 16384 20480 31516 32768 39395 40960 63032 65536 78790 81920 126064 131072 157580 163840 252128 262144 315160 327680 504256 630320 655360 1008512 1260640 1310720 2017024 2521280 4034048 5042560 8068096 10085120 16136192 20170240 32272384 40340480 62078641 64544768 80680960 124157282 129089536 161361920 248314564 258179072 310393205 322723840 496629128 516358144 620786410 645447680 993258256 1032716288 1241572820 1290895360 1986516512 2065432576 2483145640 2581790720 3973033024 4966291280 5163581440 7946066048 9932582560 10327162880 15892132096 19865165120 31784264192 39730330240 63568528384 79460660480 127137056768 158921320960 254274113536 317842641920 508548227072 635685283840 1017096454144 1271370567680 2034192908288 2542741135360 4068385816576 5085482270720 8136771633152 10170964541440 16273543266304 20341929082880 40683858165760 81367716331520
• Sum of all divisors σ(n): 195306935013162
• Sum of proper divisors (its aliquot sum) s(n): 113939218681642
• 81367716331520 is an abundant number, because the sum of its proper divisors (113939218681642) is greater than itself. Its abundance is 32571502350122

Bases of 81367716331520

• Binary: 10010100000000011100101110101000000000000000000₂
• Hexadecimal: 0x4A00E5D40000
• Base-36: SUBT9G9A8

Squares and roots of 81367716331520

• 81367716331520 squared (81367716331520²) is 6620705261006706526545510400
• 81367716331520 cubed (81367716331520³) is 538711667592195778876244898982614007808000
• The square root of 81367716331520 is 9020405.5524970717
• The cube root of 81367716331520 is 43332.8621970541

Scales and comparisons

• 81,367,716,331,520 seconds is equal to 2,587,241 years, 36 weeks, 1 hour, 25 minutes, 20 seconds.
• To count from 1 to 81,367,716,331,520 would take you about six million, four hundred sixty-eight thousand, one hundred 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 81367716331520 cubic inches would be around 3611.1 feet tall.

Recreational maths with 81367716331520

• 81367716331520 backwards is 02513361776318
• The number of decimal digits it has is: 14
• The sum of 81367716331520's digits is 53
• More coming soon!