56111663311 has 4 divisors (see below), whose sum is σ = 61212723624. Its totient is φ = 51010603000.

The previous prime is 56111663299. The next prime is 56111663359. The reversal of 56111663311 is 11336611165.

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 56111663311 - 2²⁷ = 55977445583 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 (56111663381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550530140 + ... + 2550530161.

It is an arithmetic number, because the mean of its divisors is an integer number (15303180906).

Almost surely, 2^56111663311 is an apocalyptic number.

56111663311 is a deficient number, since it is larger than the sum of its proper divisors (5101060313).

56111663311 is a wasteful number, since it uses less digits than its factorization.

56111663311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5101060312.

The product of its digits is 9720, while the sum is 34.

The spelling of 56111663311 in words is "fifty-six billion, one hundred eleven million, six hundred sixty-three thousand, three hundred eleven".