27731642732 has 12 divisors (see below), whose sum is σ = 49658988456. Its totient is φ = 13543360320.

The previous prime is 27731642723. The next prime is 27731642759. The reversal of 27731642732 is 23724613772.

It is a happy 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, 80615069 + ... + 80615412.

It is an arithmetic number, because the mean of its divisors is an integer number (4138249038).

Almost surely, 2^27731642732 is an apocalyptic number.

It is an amenable number.

27731642732 is a deficient number, since it is larger than the sum of its proper divisors (21927345724).

27731642732 is a wasteful number, since it uses less digits than its factorization.

27731642732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161230528 (or 161230526 counting only the distinct ones).

The product of its digits is 592704, while the sum is 44.

The spelling of 27731642732 in words is "twenty-seven billion, seven hundred thirty-one million, six hundred forty-two thousand, seven hundred thirty-two".