12023556173 has 4 divisors (see below), whose sum is σ = 12025384800. Its totient is φ = 12021727548.

The previous prime is 12023556169. The next prime is 12023556179. The reversal of 12023556173 is 37165532021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37165532021 = 73 ⋅509116877.

It is a cyclic number.

It is not a de Polignac number, because 12023556173 - 2² = 12023556169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023556179) 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, 904415 + ... + 917612.

It is an arithmetic number, because the mean of its divisors is an integer number (3006346200).

Almost surely, 2^12023556173 is an apocalyptic number.

It is an amenable number.

12023556173 is a deficient number, since it is larger than the sum of its proper divisors (1828627).

12023556173 is an equidigital number, since it uses as much as digits as its factorization.

12023556173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828626.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 12023556173 in words is "twelve billion, twenty-three million, five hundred fifty-six thousand, one hundred seventy-three".