172328144663 has 4 divisors (see below), whose sum is σ = 172749485280. Its totient is φ = 171906804048.

The previous prime is 172328144647. The next prime is 172328144717. The reversal of 172328144663 is 366441823271.

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

It is a cyclic number.

It is not a de Polignac number, because 172328144663 - 2⁴ = 172328144647 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 (172328144623) 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, 210669695 + ... + 210670512.

It is an arithmetic number, because the mean of its divisors is an integer number (43187371320).

Almost surely, 2^172328144663 is an apocalyptic number.

172328144663 is a deficient number, since it is larger than the sum of its proper divisors (421340617).

172328144663 is an equidigital number, since it uses as much as digits as its factorization.

172328144663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421340616.

The product of its digits is 1161216, while the sum is 47.

The spelling of 172328144663 in words is "one hundred seventy-two billion, three hundred twenty-eight million, one hundred forty-four thousand, six hundred sixty-three".