56556665203 has 16 divisors (see below), whose sum is σ = 61636892544. Its totient is φ = 51677568000.

The previous prime is 56556665183. The next prime is 56556665227. The reversal of 56556665203 is 30256665565.

56556665203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 56556665203 - 2¹⁷ = 56556534131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56556665233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189078 + ... + 385828.

It is an arithmetic number, because the mean of its divisors is an integer number (3852305784).

Almost surely, 2^56556665203 is an apocalyptic number.

56556665203 is a deficient number, since it is larger than the sum of its proper divisors (5080227341).

56556665203 is a wasteful number, since it uses less digits than its factorization.

56556665203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197262.

The product of its (nonzero) digits is 4860000, while the sum is 49.

The spelling of 56556665203 in words is "fifty-six billion, five hundred fifty-six million, six hundred sixty-five thousand, two hundred three".