27940645792 has 24 divisors (see below), whose sum is σ = 55035545796. Its totient is φ = 13963364352.

The previous prime is 27940645769. The next prime is 27940645877. The reversal of 27940645792 is 29754604972.

It can be written as a sum of positive squares in 2 ways, for example, as 27930431376 + 10214416 = 167124^2 + 3196^2 .

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, 151903 + ... + 280990.

Almost surely, 2^27940645792 is an apocalyptic number.

It is an amenable number.

27940645792 is a deficient number, since it is larger than the sum of its proper divisors (27094900004).

27940645792 is a wasteful number, since it uses less digits than its factorization.

27940645792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434920 (or 434912 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 27940645792 in words is "twenty-seven billion, nine hundred forty million, six hundred forty-five thousand, seven hundred ninety-two".