556628826655 has 16 divisors (see below), whose sum is σ = 728822707200. Its totient is φ = 404740425760.

The previous prime is 556628826653. The next prime is 556628826667.

556628826655 is nontrivially palindromic in base 10.

556628826655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556628826655 - 2¹ = 556628826653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556628826653) 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, 727075 + ... + 1281364.

It is an arithmetic number, because the mean of its divisors is an integer number (45551419200).

Almost surely, 2^556628826655 is an apocalyptic number.

556628826655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556628826655 is a deficient number, since it is larger than the sum of its proper divisors (172193880545).

556628826655 is a wasteful number, since it uses less digits than its factorization.

556628826655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013494.

The product of its digits is 207360000, while the sum is 64.

The spelling of 556628826655 in words is "five hundred fifty-six billion, six hundred twenty-eight million, eight hundred twenty-six thousand, six hundred fifty-five".