27164606173 has 4 divisors (see below), whose sum is σ = 27223532028. Its totient is φ = 27105680320.

The previous prime is 27164606149. The next prime is 27164606213. The reversal of 27164606173 is 37160646172.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3528003609 + 23636602564 = 59397^2 + 153742^2 .

It is a cyclic number.

It is not a de Polignac number, because 27164606173 - 2⁹ = 27164605661 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 (27164606143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29462236 + ... + 29463157.

It is an arithmetic number, because the mean of its divisors is an integer number (6805883007).

Almost surely, 2^27164606173 is an apocalyptic number.

It is an amenable number.

27164606173 is a deficient number, since it is larger than the sum of its proper divisors (58925855).

27164606173 is an equidigital number, since it uses as much as digits as its factorization.

27164606173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58925854.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 27164606173 in words is "twenty-seven billion, one hundred sixty-four million, six hundred six thousand, one hundred seventy-three".