27729079678 has 16 divisors (see below), whose sum is σ = 44660592864. Its totient is φ = 12865189120.

The previous prime is 27729079667. The next prime is 27729079681. The reversal of 27729079678 is 87697092772.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 5740975 + ... + 5745802.

It is an arithmetic number, because the mean of its divisors is an integer number (2791287054).

Almost surely, 2^27729079678 is an apocalyptic number.

27729079678 is a deficient number, since it is larger than the sum of its proper divisors (16931513186).

27729079678 is a wasteful number, since it uses less digits than its factorization.

27729079678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486867.

The product of its (nonzero) digits is 37340352, while the sum is 64.

The spelling of 27729079678 in words is "twenty-seven billion, seven hundred twenty-nine million, seventy-nine thousand, six hundred seventy-eight".