172073207123 has 2 divisors, whose sum is σ = 172073207124. Its totient is φ = 172073207122.

The previous prime is 172073207099. The next prime is 172073207179. The reversal of 172073207123 is 321702370271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172073207123 - 2¹⁶ = 172073141587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (172073267123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86036603561 + 86036603562.

It is an arithmetic number, because the mean of its divisors is an integer number (86036603562).

Almost surely, 2^172073207123 is an apocalyptic number.

172073207123 is a deficient number, since it is larger than the sum of its proper divisors (1).

172073207123 is an equidigital number, since it uses as much as digits as its factorization.

172073207123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 35.

Adding to 172073207123 its reverse (321702370271), we get a palindrome (493775577394).

The spelling of 172073207123 in words is "one hundred seventy-two billion, seventy-three million, two hundred seven thousand, one hundred twenty-three".