57678552994 has 4 divisors (see below), whose sum is σ = 86517829494. Its totient is φ = 28839276496.

The previous prime is 57678552991. The next prime is 57678553039. The reversal of 57678552994 is 49925587675.

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., 45844376769 + 11834176225 = 214113^2 + 108785^2 .

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (57678552991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14419638247 + ... + 14419638250.

Almost surely, 2^57678552994 is an apocalyptic number.

57678552994 is a deficient number, since it is larger than the sum of its proper divisors (28839276500).

57678552994 is a wasteful number, since it uses less digits than its factorization.

57678552994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28839276499.

The product of its digits is 190512000, while the sum is 67.

The spelling of 57678552994 in words is "fifty-seven billion, six hundred seventy-eight million, five hundred fifty-two thousand, nine hundred ninety-four".