12173634128 has 10 divisors (see below), whose sum is σ = 23586416154. Its totient is φ = 6086817056.

The previous prime is 12173634119. The next prime is 12173634157. The reversal of 12173634128 is 82143637121.

12173634128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6594739264 + 5578894864 = 81208^2 + 74692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12173634091 and 12173634100.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 380426051 + ... + 380426082.

Almost surely, 2^12173634128 is an apocalyptic number.

It is an amenable number.

12173634128 is a deficient number, since it is larger than the sum of its proper divisors (11412782026).

12173634128 is an equidigital number, since it uses as much as digits as its factorization.

12173634128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760852141 (or 760852135 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The spelling of 12173634128 in words is "twelve billion, one hundred seventy-three million, six hundred thirty-four thousand, one hundred twenty-eight".