56011611111 has 8 divisors (see below), whose sum is σ = 74742526704. Its totient is φ = 37310884800.

The previous prime is 56011611077. The next prime is 56011611121. The reversal of 56011611111 is 11111611065.

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

It is not a de Polignac number, because 56011611111 - 2¹⁷ = 56011480039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56011611121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7542990 + ... + 7550411.

It is an arithmetic number, because the mean of its divisors is an integer number (9342815838).

Almost surely, 2^56011611111 is an apocalyptic number.

56011611111 is a deficient number, since it is larger than the sum of its proper divisors (18730915593).

56011611111 is a wasteful number, since it uses less digits than its factorization.

56011611111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094641.

The product of its (nonzero) digits is 180, while the sum is 24.

The spelling of 56011611111 in words is "fifty-six billion, eleven million, six hundred eleven thousand, one hundred eleven".