27777263768 has 32 divisors (see below), whose sum is σ = 52643640000. Its totient is φ = 13739092992.

The previous prime is 27777263753. The next prime is 27777263821. The reversal of 27777263768 is 86736277772.

It is a self number, because there is not a number n which added to its sum of digits gives 27777263768.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1977233 + ... + 1991231.

It is an arithmetic number, because the mean of its divisors is an integer number (1645113750).

Almost surely, 2^27777263768 is an apocalyptic number.

It is an amenable number.

27777263768 is a deficient number, since it is larger than the sum of its proper divisors (24866376232).

27777263768 is a wasteful number, since it uses less digits than its factorization.

27777263768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16659 (or 16655 counting only the distinct ones).

The product of its digits is 58084992, while the sum is 62.

The spelling of 27777263768 in words is "twenty-seven billion, seven hundred seventy-seven million, two hundred sixty-three thousand, seven hundred sixty-eight".