27777308364 has 72 divisors (see below), whose sum is σ = 76744689840. Its totient is φ = 8419289472.

The previous prime is 27777308359. The next prime is 27777308387. The reversal of 27777308364 is 46380377772.

27777308364 is a `hidden beast` number, since 277 + 7 + 7 + 3 + 0 + 8 + 364 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 27777308364.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411579 + ... + 474290.

It is an arithmetic number, because the mean of its divisors is an integer number (1065898470).

Almost surely, 2^27777308364 is an apocalyptic number.

It is an amenable number.

27777308364 is an abundant number, since it is smaller than the sum of its proper divisors (48967381476).

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

27777308364 is a wasteful number, since it uses less digits than its factorization.

27777308364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885959 (or 885954 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 54.

The spelling of 27777308364 in words is "twenty-seven billion, seven hundred seventy-seven million, three hundred eight thousand, three hundred sixty-four".