56111297555 has 16 divisors (see below), whose sum is σ = 68056771104. Its totient is φ = 44409135360.

The previous prime is 56111297447. The next prime is 56111297563. The reversal of 56111297555 is 55579211165.

It is not a de Polignac number, because 56111297555 - 2²⁸ = 55842862099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60920 + ... + 340490.

It is an arithmetic number, because the mean of its divisors is an integer number (4253548194).

Almost surely, 2^56111297555 is an apocalyptic number.

56111297555 is a deficient number, since it is larger than the sum of its proper divisors (11945473549).

56111297555 is a wasteful number, since it uses less digits than its factorization.

56111297555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280006.

The product of its digits is 472500, while the sum is 47.

The spelling of 56111297555 in words is "fifty-six billion, one hundred eleven million, two hundred ninety-seven thousand, five hundred fifty-five".