12557066168028 has 12 divisors (see below), whose sum is σ = 29299821058760. Its totient is φ = 4185688722672.

The previous prime is 12557066167999. The next prime is 12557066168033. The reversal of 12557066168028 is 82086166075521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523211090323 + ... + 523211090346.

Almost surely, 2^{12557066168028} is an apocalyptic number.

It is an amenable number.

12557066168028 is an abundant number, since it is smaller than the sum of its proper divisors (16742754890732).

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

12557066168028 is a wasteful number, since it uses less digits than its factorization.

12557066168028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046422180676 (or 1046422180674 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 12557066168028 in words is "twelve trillion, five hundred fifty-seven billion, sixty-six million, one hundred sixty-eight thousand, twenty-eight".