27777324864 has 56 divisors (see below), whose sum is σ = 75057902208. Its totient is φ = 9062103040.

The previous prime is 27777324829. The next prime is 27777324893. The reversal of 27777324864 is 46842377772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1530057 + ... + 1548104.

Almost surely, 2^27777324864 is an apocalyptic number.

27777324864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27777324864 is an abundant number, since it is smaller than the sum of its proper divisors (47280577344).

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

27777324864 is a wasteful number, since it uses less digits than its factorization.

27777324864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078223 (or 3078213 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 57.

The spelling of 27777324864 in words is "twenty-seven billion, seven hundred seventy-seven million, three hundred twenty-four thousand, eight hundred sixty-four".