27985666248 has 24 divisors (see below), whose sum is σ = 75794512950. Its totient is φ = 9328555392.

The previous prime is 27985666213. The next prime is 27985666253. The reversal of 27985666248 is 84266658972.

It can be written as a sum of positive squares in only one way, i.e., 26102279844 + 1883386404 = 161562^2 + 43398^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194344833 + ... + 194344976.

Almost surely, 2^27985666248 is an apocalyptic number.

It is an amenable number.

27985666248 is an abundant number, since it is smaller than the sum of its proper divisors (47808846702).

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

27985666248 is a wasteful number, since it uses less digits than its factorization.

27985666248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388689821 (or 388689814 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 27985666248 in words is "twenty-seven billion, nine hundred eighty-five million, six hundred sixty-six thousand, two hundred forty-eight".