27108586685 has 16 divisors (see below), whose sum is σ = 33450382512. Its totient is φ = 21074918400.

The previous prime is 27108586613. The next prime is 27108586691. The reversal of 27108586685 is 58668580172.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 50310649 + 27058276036 = 7093^2 + 164494^2 .

It is not a de Polignac number, because 27108586685 - 2⁸ = 27108586429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27108586685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62645 + ... + 241125.

It is an arithmetic number, because the mean of its divisors is an integer number (2090648907).

Almost surely, 2^27108586685 is an apocalyptic number.

It is an amenable number.

27108586685 is a deficient number, since it is larger than the sum of its proper divisors (6341795827).

27108586685 is a wasteful number, since it uses less digits than its factorization.

27108586685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179344.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 27108586685 in words is "twenty-seven billion, one hundred eight million, five hundred eighty-six thousand, six hundred eighty-five".