81820631040

Names of 81820631040

• Cardinal: 81820631040 can be written as Eighty-one billion, eight hundred twenty million, six hundred thirty-one thousand and forty.

Scientific notation

• Scientific notation: 8.182063104 × 10¹⁰

Factors of 81820631040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 587

Divisors of 81820631040

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 577 640 768 960 1024 1154 1280 1536 1731 1920 2048 2308 2560 2885 3072 3462 3840 4096 4616 5120 5770 6144 6924 7680 8192 8655 9232 10240 11540 12288 13848 15360 16384 17310 18464 20480 23080 24576 27696 30720 34620 36928 40960 46160 49152 55392 61440 69240 73856 81920 92320 110784 122880 138480 147712 184640 221568 245760 276960 295424 332929 369280 443136 553920 590848 665858 738560 886272 998787 1107840 1181696 1331716 1477120 1664645 1772544 1997574 2215680 2363392 2663432 2954240 3329290 3545088 3995148 4431360 4726784 4993935 5326864 5908480 6658580 7090176 7990296 8862720 9453568 9987870 10653728 11816960 13317160 14180352 15980592 17725440 19975740 21307456 23633920 26634320 28360704 31961184 35450880 39951480 42614912 47267840 53268640 63922368 70901760 79902960 85229824 106537280 127844736 141803520 159805920 170459648 213074560 255689472 319611840 340919296 426149120 511378944 639223680 681838592 852298240 1022757888 1278447360 1363677184 1704596480 2045515776 2556894720 2727354368 3409192960 4091031552 5113789440 5454708736 6818385920 8182063104 10227578880 13636771840 16364126208 20455157760 27273543680 40910315520 81820631040
• Sum of all divisors σ(n): 262272572856
• Sum of proper divisors (its aliquot sum) s(n): 180451941816
• 81820631040 is an abundant number, because the sum of its proper divisors (180451941816) is greater than itself. Its abundance is 98631310776

Bases of 81820631040

• Binary: 1001100001100111000111100000000000000₂
• Hexadecimal: 0x130CE3C000
• Base-36: 11L5W2YO

Squares and roots of 81820631040

• 81820631040 squared (81820631040²) is 6694615663783811481600
• 81820631040 cubed (81820631040³) is 547757678181059929560909348864000
• The square root of 81820631040 is 286043.0580174949
• The cube root of 81820631040 is 4341.3114288079

Scales and comparisons

• 81,820,631,040 seconds is equal to 2,601 years, 33 weeks, 3 days, 1 hour, 4 minutes.
• To count from 1 to 81,820,631,040 would take you about five thousand, two hundred 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 81820631040 cubic inches would be around 361.8 feet tall.

Recreational maths with 81820631040

• 81820631040 backwards is 04013602818
• The number of decimal digits it has is: 11
• The sum of 81820631040's digits is 33
• More coming soon!