57638057780 has 12 divisors (see below), whose sum is σ = 121039921380. Its totient is φ = 23055223104.

The previous prime is 57638057731. The next prime is 57638057819. The reversal of 57638057780 is 8775083675.

It can be written as a sum of positive squares in 2 ways, for example, as 20016024484 + 37622033296 = 141478^2 + 193964^2 .

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, 1440951425 + ... + 1440951464.

It is an arithmetic number, because the mean of its divisors is an integer number (10086660115).

Almost surely, 2^57638057780 is an apocalyptic number.

It is an amenable number.

57638057780 is an abundant number, since it is smaller than the sum of its proper divisors (63401863600).

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

57638057780 is a wasteful number, since it uses less digits than its factorization.

57638057780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881902898 (or 2881902896 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 57638057780 in words is "fifty-seven billion, six hundred thirty-eight million, fifty-seven thousand, seven hundred eighty".