12856066164 has 18 divisors (see below), whose sum is σ = 32497278450. Its totient is φ = 4285355376.

The previous prime is 12856066147. The next prime is 12856066189. The reversal of 12856066164 is 46166065821.

12856066164 is a `hidden beast` number, since 1 + 28 + 5 + 6 + 0 + 6 + 616 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12387690000 + 468376164 = 111300^2 + 21642^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178556439 + ... + 178556510.

Almost surely, 2^12856066164 is an apocalyptic number.

It is an amenable number.

12856066164 is an abundant number, since it is smaller than the sum of its proper divisors (19641212286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12856066164 is a wasteful number, since it uses less digits than its factorization.

12856066164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357112959 (or 357112954 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 12856066164 in words is "twelve billion, eight hundred fifty-six million, sixty-six thousand, one hundred sixty-four".