57171000917172 has 12 divisors (see below), whose sum is σ = 133399002140096. Its totient is φ = 19057000305720.

The previous prime is 57171000917123. The next prime is 57171000917183. The reversal of 57171000917172 is 27171900017175.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382125038204 + ... + 2382125038227.

Almost surely, 2^{57171000917172} is an apocalyptic number.

It is an amenable number.

57171000917172 is an abundant number, since it is smaller than the sum of its proper divisors (76228001222924).

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

57171000917172 is a wasteful number, since it uses less digits than its factorization.

57171000917172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764250076438 (or 4764250076436 counting only the distinct ones).

The product of its (nonzero) digits is 216090, while the sum is 48.

The spelling of 57171000917172 in words is "fifty-seven trillion, one hundred seventy-one billion, nine hundred seventeen thousand, one hundred seventy-two".