56691135131 has 8 divisors (see below), whose sum is σ = 58002100128. Its totient is φ = 55392480000.

The previous prime is 56691135119. The next prime is 56691135173. The reversal of 56691135131 is 13153119665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56691135131 is a prime.

It is a super-2 number, since 2×56691135131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56691137131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068150 + ... + 3086571.

It is an arithmetic number, because the mean of its divisors is an integer number (7250262516).

Almost surely, 2^56691135131 is an apocalyptic number.

56691135131 is a deficient number, since it is larger than the sum of its proper divisors (1310964997).

56691135131 is a wasteful number, since it uses less digits than its factorization.

56691135131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154933.

The product of its digits is 72900, while the sum is 41.

The spelling of 56691135131 in words is "fifty-six billion, six hundred ninety-one million, one hundred thirty-five thousand, one hundred thirty-one".