556688686886655 has 32 divisors (see below), whose sum is σ = 892206550226880. Its totient is φ = 296399107660800.

The previous prime is 556688686886653. The next prime is 556688686886737.

556688686886655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556688686886655 - 2¹ = 556688686886653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556688686886653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 364281901 + ... + 365806889.

It is an arithmetic number, because the mean of its divisors is an integer number (27881454694590).

Almost surely, 2^{556688686886655} is an apocalyptic number.

556688686886655 is a deficient number, since it is larger than the sum of its proper divisors (335517863340225).

556688686886655 is a wasteful number, since it uses less digits than its factorization.

556688686886655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566091.

The product of its digits is 955514880000, while the sum is 96.

The spelling of 556688686886655 in words is "five hundred fifty-six trillion, six hundred eighty-eight billion, six hundred eighty-six million, eight hundred eighty-six thousand, six hundred fifty-five".