12557111672 has 16 divisors (see below), whose sum is σ = 26908096560. Its totient is φ = 5381619264.

The previous prime is 12557111663. The next prime is 12557111681. The reversal of 12557111672 is 27611175521.

It is an interprime number because it is at equal distance from previous prime (12557111663) and next prime (12557111681).

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, 112117013 + ... + 112117124.

It is an arithmetic number, because the mean of its divisors is an integer number (1681756035).

Almost surely, 2^12557111672 is an apocalyptic number.

It is an amenable number.

12557111672 is an abundant number, since it is smaller than the sum of its proper divisors (14350984888).

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

12557111672 is a wasteful number, since it uses less digits than its factorization.

12557111672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224234150 (or 224234146 counting only the distinct ones).

The product of its digits is 29400, while the sum is 38.

The spelling of 12557111672 in words is "twelve billion, five hundred fifty-seven million, one hundred eleven thousand, six hundred seventy-two".