57639538811 has 4 divisors (see below), whose sum is σ = 57641401224. Its totient is φ = 57637676400.

The previous prime is 57639538739. The next prime is 57639538837. The reversal of 57639538811 is 11883593675.

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-57639538811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57639538111) 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, 883985 + ... + 946946.

It is an arithmetic number, because the mean of its divisors is an integer number (14410350306).

Almost surely, 2^57639538811 is an apocalyptic number.

57639538811 is a deficient number, since it is larger than the sum of its proper divisors (1862413).

57639538811 is a wasteful number, since it uses less digits than its factorization.

57639538811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862412.

The product of its digits is 5443200, while the sum is 56.

The spelling of 57639538811 in words is "fifty-seven billion, six hundred thirty-nine million, five hundred thirty-eight thousand, eight hundred eleven".