57638164439 has 4 divisors (see below), whose sum is σ = 57641403960. Its totient is φ = 57634924920.

The previous prime is 57638164411. The next prime is 57638164459. The reversal of 57638164439 is 93446183675.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57638164439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57638164459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592924 + ... + 1628705.

It is an arithmetic number, because the mean of its divisors is an integer number (14410350990).

Almost surely, 2^57638164439 is an apocalyptic number.

57638164439 is a deficient number, since it is larger than the sum of its proper divisors (3239521).

57638164439 is a wasteful number, since it uses less digits than its factorization.

57638164439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239520.

The product of its digits is 13063680, while the sum is 56.

The spelling of 57638164439 in words is "fifty-seven billion, six hundred thirty-eight million, one hundred sixty-four thousand, four hundred thirty-nine".