172341374878417 has 2 divisors, whose sum is σ = 172341374878418. Its totient is φ = 172341374878416.

The previous prime is 172341374878339. The next prime is 172341374878441. The reversal of 172341374878417 is 714878473143271.

It is a happy number.

172341374878417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126064593166801 + 46276781711616 = 11227849^2 + 6802704^2 .

It is a cyclic number.

It is not a de Polignac number, because 172341374878417 - 2³⁵ = 172307015140049 is a prime.

It is not a weakly prime, because it can be changed into another prime (172341374878457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86170687439208 + 86170687439209.

It is an arithmetic number, because the mean of its divisors is an integer number (86170687439209).

Almost surely, 2^{172341374878417} is an apocalyptic number.

It is an amenable number.

172341374878417 is a deficient number, since it is larger than the sum of its proper divisors (1).

172341374878417 is an equidigital number, since it uses as much as digits as its factorization.

172341374878417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 177020928, while the sum is 67.

The spelling of 172341374878417 in words is "one hundred seventy-two trillion, three hundred forty-one billion, three hundred seventy-four million, eight hundred seventy-eight thousand, four hundred seventeen".