27666938306 has 24 divisors (see below), whose sum is σ = 48703224780. Its totient is φ = 11752323072.

The previous prime is 27666938291. The next prime is 27666938323. The reversal of 27666938306 is 60383966672.

It can be written as a sum of positive squares in 2 ways, for example, as 20743200625 + 6923737681 = 144025^2 + 83209^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1238111 + ... + 1260258.

Almost surely, 2^27666938306 is an apocalyptic number.

27666938306 is a deficient number, since it is larger than the sum of its proper divisors (21036286474).

27666938306 is a wasteful number, since it uses less digits than its factorization.

27666938306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498498 (or 2498491 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 56.

The spelling of 27666938306 in words is "twenty-seven billion, six hundred sixty-six million, nine hundred thirty-eight thousand, three hundred six".