27768110866 has 4 divisors (see below), whose sum is σ = 41652166302. Its totient is φ = 13884055432.

The previous prime is 27768110813. The next prime is 27768110893. The reversal of 27768110866 is 66801186772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26091617841 + 1676493025 = 161529^2 + 40945^2 .

It is a super-3 number, since 3×27768110866³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942027715 + ... + 6942027718.

Almost surely, 2^27768110866 is an apocalyptic number.

27768110866 is a deficient number, since it is larger than the sum of its proper divisors (13884055436).

27768110866 is a wasteful number, since it uses less digits than its factorization.

27768110866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13884055435.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 27768110866 in words is "twenty-seven billion, seven hundred sixty-eight million, one hundred ten thousand, eight hundred sixty-six".