172255722423 has 4 divisors (see below), whose sum is σ = 229674296568. Its totient is φ = 114837148280.

The previous prime is 172255722409. The next prime is 172255722433. The reversal of 172255722423 is 324227552271.

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 172255722423 - 2¹⁰ = 172255721399 is a prime.

It is a super-3 number, since 3×172255722423³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172255722433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28709287068 + ... + 28709287073.

It is an arithmetic number, because the mean of its divisors is an integer number (57418574142).

Almost surely, 2^172255722423 is an apocalyptic number.

172255722423 is a deficient number, since it is larger than the sum of its proper divisors (57418574145).

172255722423 is an equidigital number, since it uses as much as digits as its factorization.

172255722423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57418574144.

The product of its digits is 470400, while the sum is 42.

The spelling of 172255722423 in words is "one hundred seventy-two billion, two hundred fifty-five million, seven hundred twenty-two thousand, four hundred twenty-three".