56105000556 has 48 divisors (see below), whose sum is σ = 144944284800. Its totient is φ = 16747758720.

The previous prime is 56105000551. The next prime is 56105000569. The reversal of 56105000556 is 65500050165.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (56105000551) 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 15 ways as a sum of consecutive naturals, for example, 3163081 + ... + 3180768.

It is an arithmetic number, because the mean of its divisors is an integer number (3019672600).

Almost surely, 2^56105000556 is an apocalyptic number.

It is an amenable number.

56105000556 is an abundant number, since it is smaller than the sum of its proper divisors (88839284244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56105000556 is a wasteful number, since it uses less digits than its factorization.

56105000556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343934 (or 6343932 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 56105000556 in words is "fifty-six billion, one hundred five million, five hundred fifty-six", and thus it is an aban number.