172344472429 has 2 divisors, whose sum is σ = 172344472430. Its totient is φ = 172344472428.

The previous prime is 172344472403. The next prime is 172344472451. The reversal of 172344472429 is 924274443271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119076755625 + 53267716804 = 345075^2 + 230798^2 .

It is a cyclic number.

It is not a de Polignac number, because 172344472429 - 2²⁷ = 172210254701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172374472429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86172236214 + 86172236215.

It is an arithmetic number, because the mean of its divisors is an integer number (86172236215).

Almost surely, 2^172344472429 is an apocalyptic number.

It is an amenable number.

172344472429 is a deficient number, since it is larger than the sum of its proper divisors (1).

172344472429 is an equidigital number, since it uses as much as digits as its factorization.

172344472429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 49.

The spelling of 172344472429 in words is "one hundred seventy-two billion, three hundred forty-four million, four hundred seventy-two thousand, four hundred twenty-nine".