556478874655 has 32 divisors (see below), whose sum is σ = 736144492608. Its totient is φ = 400456396800.

The previous prime is 556478874631. The next prime is 556478874689.

556478874655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556478874655 - 2³¹ = 554331391007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38474125 + ... + 38488585.

It is an arithmetic number, because the mean of its divisors is an integer number (23004515394).

Almost surely, 2^556478874655 is an apocalyptic number.

556478874655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556478874655 is a deficient number, since it is larger than the sum of its proper divisors (179665617953).

556478874655 is a wasteful number, since it uses less digits than its factorization.

556478874655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21787.

The product of its digits is 1128960000, while the sum is 70.

The spelling of 556478874655 in words is "five hundred fifty-six billion, four hundred seventy-eight million, eight hundred seventy-four thousand, six hundred fifty-five".