57118577947 has 2 divisors, whose sum is σ = 57118577948. Its totient is φ = 57118577946.

The previous prime is 57118577941. The next prime is 57118577977. The reversal of 57118577947 is 74977581175.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57118577947 - 2¹⁵ = 57118545179 is a prime.

It is not a weakly prime, because it can be changed into another prime (57118577941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28559288973 + 28559288974.

It is an arithmetic number, because the mean of its divisors is an integer number (28559288974).

Almost surely, 2^57118577947 is an apocalyptic number.

57118577947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57118577947 is an equidigital number, since it uses as much as digits as its factorization.

57118577947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17287200, while the sum is 61.

The spelling of 57118577947 in words is "fifty-seven billion, one hundred eighteen million, five hundred seventy-seven thousand, nine hundred forty-seven".