820129755925845

Names of 820129755925845

• Cardinal: 820129755925845 can be written as Eight hundred twenty trillion, one hundred twenty-nine billion, seven hundred fifty-five million, nine hundred twenty-five thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 8.20129755925845 × 10¹⁴

Factors of 820129755925845

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7345

Divisors of 820129755925845

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 9 15 45 61 73 183 219 305 365 549 657 691 915 1093 1095 2073 2745 3279 3285 3455 4453 5419 5465 6219 9837 10365 13359 16257 16395 22265 27095 31095 40077 42151 48771 49185 50443 66673 66795 79789 81285 126453 151329 200019 200385 210755 239367 243855 252215 330559 333365 379359 395587 398945 453987 600057 632265 718101 755263 756645 991677 1000095 1186761 1196835 1652795 1896795 1977935 2265789 2269935 2975031 3000285 3077023 3560283 3590505 3744529 3776315 4867129 4958385 5922967 5933805 6797367 9231069 11233587 11328945 14601387 14875155 15385115 17768901 17801415 18722645 24130807 24335645 27693207 29614835 33700761 33986835 43804161 46071043 46155345 53306703 55134199 56167935 72392421 73006935 88844505 120654035 138213129 138466035 165402597 168503805 217177263 219020805 228416269 230355215 266533515 273350617 275670995 361300987 361962105 414639387 432376591 496207791 685248807 691065645 820051851 827012985 1083902961 1085886315 1142081345 1297129773 1366753085 1806504935 2055746421 2073196935 2161882955 2460155553 2481038955 3251708883 3363186139 3426244035 3891389319 4092770197 4100259255 5419514805 6485648865 10089558417 10278732105 12278310591 12300777765 16258544415 16674387637 16815930695 19456946595 20463850985 26374972051 30268675251 36834931773 50023162911 50447792085 61391552955 79124916153 83371938185 131874860255 150069488733 151343376255 184174658865 237374748459 249658982017 250115814555 298772224381 395624580765 748976946051 750347443665 896316673143 1186873742295 1248294910085 1493861121905 2246930838153 2688950019429 3744884730255 4481583365715 11234654190765 13444750097145 18225105687241 54675317061723 91125528436205 164025951185169 273376585308615 820129755925845
• Sum of all divisors σ(n): 1468387622058240
• Sum of proper divisors (its aliquot sum) s(n): 648257866132395
• 820129755925845 is a deficient number, because the sum of its proper divisors (648257866132395) is less than itself. Its deficiency is 171871889793450

Bases of 820129755925845

• Binary: 10111010011110011101010110110001011000110101010101₂
• Hexadecimal: 0x2E9E756C58D55
• Base-36: 82PMEPJZV9

Squares and roots of 820129755925845

• 820129755925845 squared (820129755925845²) is 672612816554986091893138964025
• 820129755925845 cubed (820129755925845³) is 551629785073835900716078642995580308022726125
• The square root of 820129755925845 is 28637907.6736734557
• The cube root of 820129755925845 is 93603.9529738751

Scales and comparisons

• 820,129,755,925,845 seconds is equal to 26,077,589 years, 21 weeks, 2 days, 10 hours, 30 minutes, 45 seconds.
• To count from 1 to 820,129,755,925,845 would take you about sixty-five million, one hundred ninety-three thousand, nine hundred seventy-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 820129755925845 cubic inches would be around 7800.3 feet tall.

Recreational maths with 820129755925845

• 820129755925845 backwards is 548529557921028
• The number of decimal digits it has is: 15
• The sum of 820129755925845's digits is 72
• More coming soon!