556016611556 has 96 divisors (see below), whose sum is σ = 1149278118912. Its totient is φ = 230395898880.

The previous prime is 556016611523. The next prime is 556016611571. The reversal of 556016611556 is 655116610655.

It is a super-2 number, since 2×556016611556² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 556016611556.

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, 323076776 + ... + 323078496.

It is an arithmetic number, because the mean of its divisors is an integer number (11971647072).

Almost surely, 2^556016611556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 556016611556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574639059456).

556016611556 is an abundant number, since it is smaller than the sum of its proper divisors (593261507356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556016611556 is a wasteful number, since it uses less digits than its factorization.

556016611556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549 (or 3547 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 47.

Subtracting 556016611556 from its reverse (655116610655), we obtain a palindrome (99099999099).

The spelling of 556016611556 in words is "five hundred fifty-six billion, sixteen million, six hundred eleven thousand, five hundred fifty-six".