172344423007 has 4 divisors (see below), whose sum is σ = 174916727896. Its totient is φ = 169772118120.

The previous prime is 172344422953. The next prime is 172344423019. The reversal of 172344423007 is 700324443271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700324443271 = 3727 ⋅187905673.

It is a cyclic number.

It is not a de Polignac number, because 172344423007 - 2⁷ = 172344422879 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 (172344423037) 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, 1286152344 + ... + 1286152477.

It is an arithmetic number, because the mean of its divisors is an integer number (43729181974).

Almost surely, 2^172344423007 is an apocalyptic number.

172344423007 is a deficient number, since it is larger than the sum of its proper divisors (2572304889).

172344423007 is an equidigital number, since it uses as much as digits as its factorization.

172344423007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572304888.

The product of its (nonzero) digits is 112896, while the sum is 37.

Adding to 172344423007 its reverse (700324443271), we get a palindrome (872668866278).

The spelling of 172344423007 in words is "one hundred seventy-two billion, three hundred forty-four million, four hundred twenty-three thousand, seven".