27768366856 has 16 divisors (see below), whose sum is σ = 52087054140. Its totient is φ = 13878485760.

The previous prime is 27768366853. The next prime is 27768366863. The reversal of 27768366856 is 65866386772.

It can be written as a sum of positive squares in 2 ways, for example, as 27665668900 + 102697956 = 166330^2 + 10134^2 .

It is not an unprimeable number, because it can be changed into a prime (27768366853) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 691461 + ... + 730516.

Almost surely, 2^27768366856 is an apocalyptic number.

It is an amenable number.

27768366856 is a deficient number, since it is larger than the sum of its proper divisors (24318687284).

27768366856 is a wasteful number, since it uses less digits than its factorization.

27768366856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424424 (or 1424420 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 64.

The spelling of 27768366856 in words is "twenty-seven billion, seven hundred sixty-eight million, three hundred sixty-six thousand, eight hundred fifty-six".