27966823678 has 16 divisors (see below), whose sum is σ = 42285363120. Its totient is φ = 13872081600.

The previous prime is 27966823649. The next prime is 27966823679. The reversal of 27966823678 is 87632866972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27966823679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53613 + ... + 242503.

It is an arithmetic number, because the mean of its divisors is an integer number (2642835195).

Almost surely, 2^27966823678 is an apocalyptic number.

27966823678 is a deficient number, since it is larger than the sum of its proper divisors (14318539442).

27966823678 is a wasteful number, since it uses less digits than its factorization.

27966823678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189483.

The product of its digits is 73156608, while the sum is 64.

The spelling of 27966823678 in words is "twenty-seven billion, nine hundred sixty-six million, eight hundred twenty-three thousand, six hundred seventy-eight".