556438404834655 has 32 divisors (see below), whose sum is σ = 789540911913600. Its totient is φ = 368348772567552.

The previous prime is 556438404834623. The next prime is 556438404834667.

556438404834655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556438404834655 - 2⁵ = 556438404834623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31342192 + ... + 45773461.

It is an arithmetic number, because the mean of its divisors is an integer number (24673153497300).

Almost surely, 2^{556438404834655} is an apocalyptic number.

556438404834655 is a deficient number, since it is larger than the sum of its proper divisors (233102507078945).

556438404834655 is a wasteful number, since it uses less digits than its factorization.

556438404834655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77122803.

The product of its (nonzero) digits is 3317760000, while the sum is 70.

The spelling of 556438404834655 in words is "five hundred fifty-six trillion, four hundred thirty-eight billion, four hundred four million, eight hundred thirty-four thousand, six hundred fifty-five".