27108164893 has 4 divisors (see below), whose sum is σ = 27113125248. Its totient is φ = 27103204540.

The previous prime is 27108164813. The next prime is 27108164911. The reversal of 27108164893 is 39846180172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27108164893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27108164813) by changing a digit.

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, 2471971 + ... + 2482912.

It is an arithmetic number, because the mean of its divisors is an integer number (6778281312).

Almost surely, 2^27108164893 is an apocalyptic number.

It is an amenable number.

27108164893 is a deficient number, since it is larger than the sum of its proper divisors (4960355).

27108164893 is an equidigital number, since it uses as much as digits as its factorization.

27108164893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960354.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 27108164893 in words is "twenty-seven billion, one hundred eight million, one hundred sixty-four thousand, eight hundred ninety-three".