556568865655 has 16 divisors (see below), whose sum is σ = 729009386784. Its totient is φ = 404549498880.

The previous prime is 556568865653. The next prime is 556568865803.

556568865655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556568865655 - 2¹ = 556568865653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556568865653) 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, 2749602 + ... + 2945071.

It is an arithmetic number, because the mean of its divisors is an integer number (45563086674).

Almost surely, 2^556568865655 is an apocalyptic number.

556568865655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556568865655 is a deficient number, since it is larger than the sum of its proper divisors (172440521129).

556568865655 is a wasteful number, since it uses less digits than its factorization.

556568865655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696466.

The product of its digits is 1296000000, while the sum is 70.

The spelling of 556568865655 in words is "five hundred fifty-six billion, five hundred sixty-eight million, eight hundred sixty-five thousand, six hundred fifty-five".