57135669691 has 4 divisors (see below), whose sum is σ = 57499591312. Its totient is φ = 56771748072.

The previous prime is 57135669683. The next prime is 57135669697. The reversal of 57135669691 is 19696653175.

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

It is a cyclic number.

It is not a de Polignac number, because 57135669691 - 2³ = 57135669683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57135669697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181960575 + ... + 181960888.

It is an arithmetic number, because the mean of its divisors is an integer number (14374897828).

Almost surely, 2^57135669691 is an apocalyptic number.

57135669691 is a deficient number, since it is larger than the sum of its proper divisors (363921621).

57135669691 is a wasteful number, since it uses less digits than its factorization.

57135669691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363921620.

The product of its digits is 9185400, while the sum is 58.

The spelling of 57135669691 in words is "fifty-seven billion, one hundred thirty-five million, six hundred sixty-nine thousand, six hundred ninety-one".