27557755828 has 12 divisors (see below), whose sum is σ = 48304749220. Its totient is φ = 13756398912.

The previous prime is 27557755817. The next prime is 27557755853. The reversal of 27557755828 is 82855775572.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7089303204 + 20468452624 = 84198^2 + 143068^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5616993 + ... + 5621896.

Almost surely, 2^27557755828 is an apocalyptic number.

It is an amenable number.

27557755828 is a deficient number, since it is larger than the sum of its proper divisors (20746993392).

27557755828 is a wasteful number, since it uses less digits than its factorization.

27557755828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11239506 (or 11239504 counting only the distinct ones).

The product of its digits is 54880000, while the sum is 61.

The spelling of 27557755828 in words is "twenty-seven billion, five hundred fifty-seven million, seven hundred fifty-five thousand, eight hundred twenty-eight".