27946777964 has 12 divisors (see below), whose sum is σ = 55893555984. Its totient is φ = 11977190544.

The previous prime is 27946777939. The next prime is 27946777979. The reversal of 27946777964 is 46977764972.

27946777964 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 27946777894 and 27946777903.

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, 499049579 + ... + 499049634.

It is an arithmetic number, because the mean of its divisors is an integer number (4657796332).

Almost surely, 2^27946777964 is an apocalyptic number.

It is an amenable number.

27946777964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27946777964 is a wasteful number, since it uses less digits than its factorization.

27946777964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998099224 (or 998099222 counting only the distinct ones).

The product of its digits is 224042112, while the sum is 68.

The spelling of 27946777964 in words is "twenty-seven billion, nine hundred forty-six million, seven hundred seventy-seven thousand, nine hundred sixty-four".