57310894978 has 4 divisors (see below), whose sum is σ = 85966342470. Its totient is φ = 28655447488.

The previous prime is 57310894961. The next prime is 57310894997. The reversal of 57310894978 is 87949801375.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44362048129 + 12948846849 = 210623^2 + 113793^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14327723743 + ... + 14327723746.

Almost surely, 2^57310894978 is an apocalyptic number.

57310894978 is a deficient number, since it is larger than the sum of its proper divisors (28655447492).

57310894978 is a wasteful number, since it uses less digits than its factorization.

57310894978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28655447491.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 57310894978 in words is "fifty-seven billion, three hundred ten million, eight hundred ninety-four thousand, nine hundred seventy-eight".