556485666584655 has 16 divisors (see below), whose sum is σ = 890428258643040. Its totient is φ = 296775291475968.

The previous prime is 556485666584647. The next prime is 556485666584699.

It is a happy number.

556485666584655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556485666584655 - 2³ = 556485666584647 is a prime.

It is a super-2 number, since 2×556485666584655² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1066232650 + ... + 1066754439.

It is an arithmetic number, because the mean of its divisors is an integer number (55651766165190).

Almost surely, 2^{556485666584655} is an apocalyptic number.

556485666584655 is a deficient number, since it is larger than the sum of its proper divisors (333942592058385).

556485666584655 is a wasteful number, since it uses less digits than its factorization.

556485666584655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133004490.

The product of its digits is 124416000000, while the sum is 84.

The spelling of 556485666584655 in words is "five hundred fifty-six trillion, four hundred eighty-five billion, six hundred sixty-six million, five hundred eighty-four thousand, six hundred fifty-five".