12864683655 has 24 divisors (see below), whose sum is σ = 23124668112. Its totient is φ = 6861163968.

The previous prime is 12864683621. The next prime is 12864683669. The reversal of 12864683655 is 55638646821.

12864683655 is a `hidden beast` number, since 128 + 6 + 468 + 3 + 6 + 55 = 666.

It is not a de Polignac number, because 12864683655 - 2⁷ = 12864683527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5292894 + ... + 5295323.

It is an arithmetic number, because the mean of its divisors is an integer number (963527838).

Almost surely, 2^12864683655 is an apocalyptic number.

12864683655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12864683655 is a deficient number, since it is larger than the sum of its proper divisors (10259984457).

12864683655 is an equidigital number, since it uses as much as digits as its factorization.

12864683655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588237 (or 10588225 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 12864683655 in words is "twelve billion, eight hundred sixty-four million, six hundred eighty-three thousand, six hundred fifty-five".