27747857832 has 32 divisors (see below), whose sum is σ = 69983542080. Its totient is φ = 9167432960.

The previous prime is 27747857803. The next prime is 27747857941. The reversal of 27747857832 is 23875874772.

It is a super-2 number, since 2×27747857832² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5113044 + ... + 5118467.

It is an arithmetic number, because the mean of its divisors is an integer number (2186985690).

Almost surely, 2^27747857832 is an apocalyptic number.

It is an amenable number.

27747857832 is an abundant number, since it is smaller than the sum of its proper divisors (42235684248).

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

27747857832 is a wasteful number, since it uses less digits than its factorization.

27747857832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231633 (or 10231629 counting only the distinct ones).

The product of its digits is 36879360, while the sum is 60.

The spelling of 27747857832 in words is "twenty-seven billion, seven hundred forty-seven million, eight hundred fifty-seven thousand, eight hundred thirty-two".