56556207065553 has 16 divisors (see below), whose sum is σ = 81233529115200. Its totient is φ = 34793269844544.

The previous prime is 56556207065531. The next prime is 56556207065609. The reversal of 56556207065553 is 35556070265565.

It is a happy number.

It is not a de Polignac number, because 56556207065553 - 2⁵ = 56556207065521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56556207065753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219659026 + ... + 219916347.

It is an arithmetic number, because the mean of its divisors is an integer number (5077095569700).

Almost surely, 2^{56556207065553} is an apocalyptic number.

It is an amenable number.

56556207065553 is a deficient number, since it is larger than the sum of its proper divisors (24677322049647).

56556207065553 is a wasteful number, since it uses less digits than its factorization.

56556207065553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439578688.

The product of its (nonzero) digits is 141750000, while the sum is 60.

The spelling of 56556207065553 in words is "fifty-six trillion, five hundred fifty-six billion, two hundred seven million, sixty-five thousand, five hundred fifty-three".