12856644074 has 16 divisors (see below), whose sum is σ = 20187449856. Its totient is φ = 6133335600.

The previous prime is 12856644049. The next prime is 12856644083. The reversal of 12856644074 is 47044665821.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1455917 + ... + 1464720.

It is an arithmetic number, because the mean of its divisors is an integer number (1261715616).

Almost surely, 2^12856644074 is an apocalyptic number.

12856644074 is a deficient number, since it is larger than the sum of its proper divisors (7330805782).

12856644074 is a wasteful number, since it uses less digits than its factorization.

12856644074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920741.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 12856644074 in words is "twelve billion, eight hundred fifty-six million, six hundred forty-four thousand, seventy-four".