556558929855655 has 16 divisors (see below), whose sum is σ = 670535427822624. Its totient is φ = 443470689712000.

The previous prime is 556558929855601. The next prime is 556558929855679.

It is a happy number.

556558929855655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556558929855655 - 2¹⁵ = 556558929822887 is a prime.

It is a Duffinian number.

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, 233212917 + ... + 235587313.

It is an arithmetic number, because the mean of its divisors is an integer number (41908464238914).

Almost surely, 2^{556558929855655} is an apocalyptic number.

556558929855655 is a deficient number, since it is larger than the sum of its proper divisors (113976497966969).

556558929855655 is a wasteful number, since it uses less digits than its factorization.

556558929855655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561426.

The product of its digits is 145800000000, while the sum is 88.

The spelling of 556558929855655 in words is "five hundred fifty-six trillion, five hundred fifty-eight billion, nine hundred twenty-nine million, eight hundred fifty-five thousand, six hundred fifty-five".