57171665730 has 32 divisors (see below), whose sum is σ = 137218305600. Its totient is φ = 15245076672.

The previous prime is 57171665723. The next prime is 57171665767. The reversal of 57171665730 is 3756617175.

It is a happy number.

57171665730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 57171665730.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1181961 + ... + 1229379.

It is an arithmetic number, because the mean of its divisors is an integer number (4288072050).

Almost surely, 2^57171665730 is an apocalyptic number.

57171665730 is an abundant number, since it is smaller than the sum of its proper divisors (80046639870).

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

57171665730 is a wasteful number, since it uses less digits than its factorization.

57171665730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87618.

The product of its (nonzero) digits is 926100, while the sum is 48.

The spelling of 57171665730 in words is "fifty-seven billion, one hundred seventy-one million, six hundred sixty-five thousand, seven hundred thirty".