556207776828 has 72 divisors (see below), whose sum is σ = 1552264511616. Its totient is φ = 166517104800.

The previous prime is 556207776827. The next prime is 556207776863. The reversal of 556207776828 is 828677702655.

556207776828 is a `hidden beast` number, since 5 + 562 + 0 + 7 + 7 + 7 + 68 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556207776827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8428368 + ... + 8494103.

It is an arithmetic number, because the mean of its divisors is an integer number (21559229328).

Almost surely, 2^556207776828 is an apocalyptic number.

It is an amenable number.

556207776828 is an abundant number, since it is smaller than the sum of its proper divisors (996056734788).

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

556207776828 is a wasteful number, since it uses less digits than its factorization.

556207776828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16922575 (or 16922570 counting only the distinct ones).

The product of its (nonzero) digits is 79027200, while the sum is 63.

The spelling of 556207776828 in words is "five hundred fifty-six billion, two hundred seven million, seven hundred seventy-six thousand, eight hundred twenty-eight".