27776864068 has 12 divisors (see below), whose sum is σ = 48613074300. Its totient is φ = 13887414272.

The previous prime is 27776864053. The next prime is 27776864107. The reversal of 27776864068 is 86046867772.

It can be written as a sum of positive squares in 2 ways, for example, as 2889277504 + 24887586564 = 53752^2 + 157758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27776863997 and 27776864015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191293 + ... + 303556.

It is an arithmetic number, because the mean of its divisors is an integer number (4051089525).

Almost surely, 2^27776864068 is an apocalyptic number.

It is an amenable number.

27776864068 is a deficient number, since it is larger than the sum of its proper divisors (20836210232).

27776864068 is a wasteful number, since it uses less digits than its factorization.

27776864068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508886 (or 508884 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 61.

The spelling of 27776864068 in words is "twenty-seven billion, seven hundred seventy-six million, eight hundred sixty-four thousand, sixty-eight".