57861776838 has 32 divisors (see below), whose sum is σ = 118407081600. Its totient is φ = 18844016256.

The previous prime is 57861776743. The next prime is 57861776849. The reversal of 57861776838 is 83867716875.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443683 + ... + 559086.

It is an arithmetic number, because the mean of its divisors is an integer number (3700221300).

Almost surely, 2^57861776838 is an apocalyptic number.

57861776838 is an abundant number, since it is smaller than the sum of its proper divisors (60545304762).

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

57861776838 is a wasteful number, since it uses less digits than its factorization.

57861776838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002996.

The product of its digits is 94832640, while the sum is 66.

The spelling of 57861776838 in words is "fifty-seven billion, eight hundred sixty-one million, seven hundred seventy-six thousand, eight hundred thirty-eight".