81984181709440

Names of 81984181709440

• Cardinal: 81984181709440 can be written as Eighty-one trillion, nine hundred eighty-four billion, one hundred eighty-one million, seven hundred nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 8.198418170944 × 10¹³

Factors of 81984181709440

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 78

Divisors of 81984181709440

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 71 80 128 142 160 284 320 355 568 640 710 1136 1420 2272 2840 4544 5041 5680 9088 10082 11360 20164 22720 25205 40328 45440 50410 80656 100820 161312 201640 322624 357911 403280 645248 715822 806560 1431644 1613120 1789555 2863288 3226240 3579110 5726576 7158220 11453152 14316440 22906304 25411681 28632880 45812608 50823362 57265760 101646724 114531520 127058405 203293448 229063040 254116810 406586896 508233620 813173792 1016467240 1626347584 1804229351 2032934480 3252695168 3608458702 4065868960 7216917404 8131737920 9021146755 14433834808 16263475840 18042293510 28867669616 36084587020 57735339232 72169174040 115470678464 128100283921 144338348080 230941356928 256200567842 288676696160 512401135684 577353392320 640501419605 1024802271368 1154706784640 1281002839210 2049604542736 2562005678420 4099209085472 5124011356840 8198418170944 10248022713680 16396836341888 20496045427360 40992090854720 81984181709440
• Sum of all divisors σ(n): 198793340604810
• Sum of proper divisors (its aliquot sum) s(n): 116809158895370
• 81984181709440 is an abundant number, because the sum of its proper divisors (116809158895370) is greater than itself. Its abundance is 34824977185930

Bases of 81984181709440

• Binary: 10010101001000001101110000001110010101010000000₂
• Hexadecimal: 0x4A906E072A80
• Base-36: T270H0R5S

Squares and roots of 81984181709440

• 81984181709440 squared (81984181709440²) is 6721406050566476240585113600
• 81984181709440 cubed (81984181709440³) is 551048974992571449154210403408664592384000
• The square root of 81984181709440 is 9054511.6770281985
• The cube root of 81984181709440 is 43442.0210898029
• Being both a perfect square and a perfect cube, 81984181709440 is also a perfect sixth number.

Scales and comparisons

• 81,984,181,709,440 seconds is equal to 2,606,843 years, 20 weeks, 10 minutes, 40 seconds.
• To count from 1 to 81,984,181,709,440 would take you about six million, five hundred seventeen thousand, one hundred eight 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 81984181709440 cubic inches would be around 3620.2 feet tall.

Recreational maths with 81984181709440

• 81984181709440 backwards is 04490718148918
• 81984181709440 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81984181709440's digits is 64
• More coming soon!