78421884138

Names of 78421884138

• Cardinal: 78421884138 can be written as Seventy-eight billion, four hundred twenty-one million, eight hundred eighty-four thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 7.8421884138 × 10¹⁰

Factors of 78421884138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5827

Divisors of 78421884138

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 9 13 18 26 31 39 61 62 78 93 117 122 183 186 234 279 366 403 549 558 793 806 961 1098 1209 1586 1891 1922 2379 2418 2883 3627 3782 4758 5673 5717 5766 7137 7254 8649 11346 11434 12493 14274 17019 17151 17298 24583 24986 34038 34302 37479 49166 51453 58621 73749 74321 74958 102906 112437 117242 147498 148642 175863 177227 221247 222963 224874 348737 351726 354454 442494 445926 527589 531681 668889 697474 762073 1046211 1055178 1063362 1337778 1524146 1595043 2092422 2286219 2303951 3138633 3190086 4533581 4572438 4607902 5494037 6277266 6858657 6911853 9067162 10810847 10988074 13600743 13717314 13823706 16482111 20735559 21621694 27201486 32432541 32964222 40802229 41471118 49446333 64865082 71422481 81604458 97297623 98892666 140541011 142844962 194595246 214267443 281082022 335136257 421623033 428534886 642802329 670272514 843246066 1005408771 1264869099 1285604658 2010817542 2529738198 3016226313 4356771341 6032452626 8713542682 13070314023 26140628046 39210942069 78421884138
• Sum of all divisors σ(n): 192210775848
• Sum of proper divisors (its aliquot sum) s(n): 113788891710
• 78421884138 is an abundant number, because the sum of its proper divisors (113788891710) is greater than itself. Its abundance is 35367007572

Bases of 78421884138

• Binary: 1001001000010010011101111110011101010₂
• Hexadecimal: 0x12424EFCEA
• Base-36: 100YD52I

Squares and roots of 78421884138

• 78421884138 squared (78421884138²) is 6149991911753896003044
• 78421884138 cubed (78421884138³) is 482293953153201152720817863316072
• The square root of 78421884138 is 280039.0760911769
• The cube root of 78421884138 is 4280.3481123165

Scales and comparisons

• 78,421,884,138 seconds is equal to 2,493 years, 29 weeks, 5 days, 16 hours, 42 minutes, 18 seconds.
• To count from 1 to 78,421,884,138 would take you about four thousand, nine hundred eighty-seven 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 78421884138 cubic inches would be around 356.7 feet tall.

Recreational maths with 78421884138

• 78421884138 backwards is 83148812487
• The number of decimal digits it has is: 11
• The sum of 78421884138's digits is 54
• More coming soon!