12164256655 has 4 divisors (see below), whose sum is σ = 14597107992. Its totient is φ = 9731405320.

The previous prime is 12164256631. The next prime is 12164256661. The reversal of 12164256655 is 55665246121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55665246121 = 71 ⋅784017551.

It is not a de Polignac number, because 12164256655 - 2⁷ = 12164256527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1216425661 + ... + 1216425670.

It is an arithmetic number, because the mean of its divisors is an integer number (3649276998).

Almost surely, 2^12164256655 is an apocalyptic number.

12164256655 is a deficient number, since it is larger than the sum of its proper divisors (2432851337).

12164256655 is an equidigital number, since it uses as much as digits as its factorization.

12164256655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432851336.

The product of its digits is 432000, while the sum is 43.

The spelling of 12164256655 in words is "twelve billion, one hundred sixty-four million, two hundred fifty-six thousand, six hundred fifty-five".