27666710163 has 20 divisors (see below), whose sum is σ = 43760419560. Its totient is φ = 17359503552.

The previous prime is 27666710111. The next prime is 27666710167. The reversal of 27666710163 is 36101766672.

It is not a de Polignac number, because 27666710163 - 2¹⁴ = 27666693779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27666710167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10044633 + ... + 10047386.

It is an arithmetic number, because the mean of its divisors is an integer number (2188020978).

Almost surely, 2^27666710163 is an apocalyptic number.

27666710163 is a deficient number, since it is larger than the sum of its proper divisors (16093709397).

27666710163 is a wasteful number, since it uses less digits than its factorization.

27666710163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20092048 (or 20092039 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 27666710163 in words is "twenty-seven billion, six hundred sixty-six million, seven hundred ten thousand, one hundred sixty-three".