172243349327 has 4 divisors (see below), whose sum is σ = 196849542096. Its totient is φ = 147637156560.

The previous prime is 172243349297. The next prime is 172243349351. The reversal of 172243349327 is 723943342271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 723943342271 = 31 ⋅23353011041.

It is a cyclic number.

It is not a de Polignac number, because 172243349327 - 2⁸ = 172243349071 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 (172243349527) 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, 12303096374 + ... + 12303096387.

It is an arithmetic number, because the mean of its divisors is an integer number (49212385524).

Almost surely, 2^172243349327 is an apocalyptic number.

172243349327 is a deficient number, since it is larger than the sum of its proper divisors (24606192769).

172243349327 is an equidigital number, since it uses as much as digits as its factorization.

172243349327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606192768.

The product of its digits is 1524096, while the sum is 47.

The spelling of 172243349327 in words is "one hundred seventy-two billion, two hundred forty-three million, three hundred forty-nine thousand, three hundred twenty-seven".