27866065912 has 64 divisors (see below), whose sum is σ = 56976307200. Its totient is φ = 12728171520.

The previous prime is 27866065847. The next prime is 27866065921. The reversal of 27866065912 is 21956066872.

It is a self number, because there is not a number n which added to its sum of digits gives 27866065912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323048 + ... + 1343944.

It is an arithmetic number, because the mean of its divisors is an integer number (890254800).

Almost surely, 2^27866065912 is an apocalyptic number.

It is an amenable number.

27866065912 is an abundant number, since it is smaller than the sum of its proper divisors (29110241288).

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

27866065912 is a wasteful number, since it uses less digits than its factorization.

27866065912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21236 (or 21232 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 27866065912 in words is "twenty-seven billion, eight hundred sixty-six million, sixty-five thousand, nine hundred twelve".