556550055656 has 64 divisors (see below), whose sum is σ = 1262891710080. Its totient is φ = 224467476480.

The previous prime is 556550055647. The next prime is 556550055703. The reversal of 556550055656 is 656550055655.

It is a junction number, because it is equal to n+sod(n) for n = 556550055598 and 556550055607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11410136 + ... + 11458808.

It is an arithmetic number, because the mean of its divisors is an integer number (19732682970).

Almost surely, 2^556550055656 is an apocalyptic number.

556550055656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

556550055656 is an abundant number, since it is smaller than the sum of its proper divisors (706341654424).

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

556550055656 is a wasteful number, since it uses less digits than its factorization.

556550055656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60714 (or 60710 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 53.

Subtracting 556550055656 from its reverse (656550055655), we obtain a palindrome (99999999999).

The spelling of 556550055656 in words is "five hundred fifty-six billion, five hundred fifty million, fifty-five thousand, six hundred fifty-six".