27777656994 has 8 divisors (see below), whose sum is σ = 55555314000. Its totient is φ = 9259218996.

The previous prime is 27777656987. The next prime is 27777657023. The reversal of 27777656994 is 49965677772.

It is a sphenic number, since it is the product of 3 distinct primes.

27777656994 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 2314804744 + ... + 2314804755.

It is an arithmetic number, because the mean of its divisors is an integer number (6944414250).

Almost surely, 2^27777656994 is an apocalyptic number.

27777656994 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.

27777656994 is a wasteful number, since it uses less digits than its factorization.

27777656994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629609504.

The product of its digits is 280052640, while the sum is 69.

The spelling of 27777656994 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred fifty-six thousand, nine hundred ninety-four".