57125821768 has 8 divisors (see below), whose sum is σ = 107110915830. Its totient is φ = 28562910880.

The previous prime is 57125821703. The next prime is 57125821777. The reversal of 57125821768 is 86712852175.

It can be written as a sum of positive squares in only one way, i.e., 45779737444 + 11346084324 = 213962^2 + 106518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570363853 + ... + 3570363868.

Almost surely, 2^57125821768 is an apocalyptic number.

It is an amenable number.

57125821768 is a deficient number, since it is larger than the sum of its proper divisors (49985094062).

57125821768 is a wasteful number, since it uses less digits than its factorization.

57125821768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140727727 (or 7140727723 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 52.

The spelling of 57125821768 in words is "fifty-seven billion, one hundred twenty-five million, eight hundred twenty-one thousand, seven hundred sixty-eight".