172873144429 has 8 divisors (see below), whose sum is σ = 176761045760. Its totient is φ = 169027734096.

The previous prime is 172873144417. The next prime is 172873144447. The reversal of 172873144429 is 924441378271.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172873144429 - 2⁵ = 172873144397 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 (172873144729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10614522 + ... + 10630795.

It is an arithmetic number, because the mean of its divisors is an integer number (22095130720).

Almost surely, 2^172873144429 is an apocalyptic number.

It is an amenable number.

172873144429 is a deficient number, since it is larger than the sum of its proper divisors (3887901331).

172873144429 is a wasteful number, since it uses less digits than its factorization.

172873144429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21245499.

The product of its digits is 2709504, while the sum is 52.

The spelling of 172873144429 in words is "one hundred seventy-two billion, eight hundred seventy-three million, one hundred forty-four thousand, four hundred twenty-nine".