12078021318256 has 20 divisors (see below), whose sum is σ = 23401362942112. Its totient is φ = 6038959913856.

The previous prime is 12078021318239. The next prime is 12078021318313. The reversal of 12078021318256 is 65281312087021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169685 + ... + 5052148.

Almost surely, 2^{12078021318256} is an apocalyptic number.

12078021318256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12078021318256 is a deficient number, since it is larger than the sum of its proper divisors (11323341623856).

12078021318256 is a wasteful number, since it uses less digits than its factorization.

12078021318256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343168 (or 6343162 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 12078021318256 in words is "twelve trillion, seventy-eight billion, twenty-one million, three hundred eighteen thousand, two hundred fifty-six".