12173625605 has 4 divisors (see below), whose sum is σ = 14608350732. Its totient is φ = 9738900480.

The previous prime is 12173625533. The next prime is 12173625637. The reversal of 12173625605 is 50652637121.

It is a happy number.

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 1844358916 + 10329266689 = 42946^2 + 101633^2 .

It is not a de Polignac number, because 12173625605 - 2⁸ = 12173625349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217362556 + ... + 1217362565.

It is an arithmetic number, because the mean of its divisors is an integer number (3652087683).

Almost surely, 2^12173625605 is an apocalyptic number.

It is an amenable number.

12173625605 is a deficient number, since it is larger than the sum of its proper divisors (2434725127).

12173625605 is an equidigital number, since it uses as much as digits as its factorization.

12173625605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434725126.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 12173625605 in words is "twelve billion, one hundred seventy-three million, six hundred twenty-five thousand, six hundred five".