12997451538

Names of 12997451538

• Cardinal: 12997451538 can be written as Twelve billion, nine hundred ninety-seven million, four hundred fifty-one thousand, five hundred thirty-eight.

Scientific notation

• Scientific notation: 1.2997451538 × 10¹⁰

Factors of 12997451538

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 903

Divisors of 12997451538

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 9 18 27 37 54 67 74 111 134 151 201 222 302 333 402 453 603 643 666 906 999 1206 1286 1359 1809 1929 1998 2479 2718 3618 3858 4077 4958 5587 5787 7437 8154 10117 11174 11574 14874 16761 17361 20234 22311 23791 30351 33522 34722 43081 44622 47582 50283 60702 66933 71373 86162 91053 97093 100566 129243 133866 142746 150849 182106 194186 214119 258486 273159 291279 301698 374329 387729 428238 546318 582558 642357 748658 775458 873837 1122987 1163187 1284714 1593997 1747674 2245974 2326374 2621511 3187994 3368961 3592441 4781991 5243022 6505231 6737922 7184882 9563982 10106883 10777323 13010462 14345973 19515693 20213766 21554646 28691946 32331969 39031386 43037919 58547079 64663938 86075838 96995907 117094158 175641237 193991814 240693547 351282474 481387094 722080641 1444161282 2166241923 4332483846 6498725769 12997451538
• Sum of all divisors σ(n): 30353111040
• Sum of proper divisors (its aliquot sum) s(n): 17355659502
• 12997451538 is an abundant number, because the sum of its proper divisors (17355659502) is greater than itself. Its abundance is 4358207964

Bases of 12997451538

• Binary: 1100000110101101010101111100010010₂
• Hexadecimal: 0x306B55F12
• Base-36: 5YYCHSI

Squares and roots of 12997451538

• 12997451538 squared (12997451538²) is 168933746482658565444
• 12997451538 cubed (12997451538³) is 2195708183041132661758991452872
• The square root of 12997451538 is 114006.3662169793
• The cube root of 12997451538 is 2351.1810292923

Scales and comparisons

• 12,997,451,538 seconds is equal to 413 years, 14 weeks, 3 days, 11 hours, 12 minutes, 18 seconds.
• To count from 1 to 12,997,451,538 would take you about eight hundred twenty-six 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 12997451538 cubic inches would be around 195.9 feet tall.

Recreational maths with 12997451538

• 12997451538 backwards is 83515479921
• 12997451538 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12997451538's digits is 54
• More coming soon!