12543627634172 has 12 divisors (see below), whose sum is σ = 21952444916136. Its totient is φ = 6271500515280.

The previous prime is 12543627634141. The next prime is 12543627634247. The reversal of 12543627634172 is 27143672634521.

12543627634172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 78235358 + ... + 78395525.

It is an arithmetic number, because the mean of its divisors is an integer number (1829370409678).

Almost surely, 2^{12543627634172} is an apocalyptic number.

It is an amenable number.

12543627634172 is a deficient number, since it is larger than the sum of its proper divisors (9408817281964).

12543627634172 is a wasteful number, since it uses less digits than its factorization.

12543627634172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156650908 (or 156650906 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 53.

The spelling of 12543627634172 in words is "twelve trillion, five hundred forty-three billion, six hundred twenty-seven million, six hundred thirty-four thousand, one hundred seventy-two".