27397947648 has 36 divisors (see below), whose sum is σ = 72918498128. Its totient is φ = 9132648960.

The previous prime is 27397947637. The next prime is 27397947673. The reversal of 27397947648 is 84674979372.

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, 17836438 + ... + 17837973.

Almost surely, 2^27397947648 is an apocalyptic number.

It is an amenable number.

27397947648 is an abundant number, since it is smaller than the sum of its proper divisors (45520550480).

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

27397947648 is an equidigital number, since it uses as much as digits as its factorization.

27397947648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35674430 (or 35674416 counting only the distinct ones).

The product of its digits is 128024064, while the sum is 66.

The spelling of 27397947648 in words is "twenty-seven billion, three hundred ninety-seven million, nine hundred forty-seven thousand, six hundred forty-eight".