27677608778 has 16 divisors (see below), whose sum is σ = 44488180800. Its totient is φ = 12867830976.

The previous prime is 27677608747. The next prime is 27677608793. The reversal of 27677608778 is 87780677672.

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 7 ways as a sum of consecutive naturals, for example, 4901078 + ... + 4906721.

It is an arithmetic number, because the mean of its divisors is an integer number (2780511300).

Almost surely, 2^27677608778 is an apocalyptic number.

27677608778 is a deficient number, since it is larger than the sum of its proper divisors (16810572022).

27677608778 is a wasteful number, since it uses less digits than its factorization.

27677608778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9807901.

The product of its (nonzero) digits is 77446656, while the sum is 65.

The spelling of 27677608778 in words is "twenty-seven billion, six hundred seventy-seven million, six hundred eight thousand, seven hundred seventy-eight".