173144572873 has 4 divisors (see below), whose sum is σ = 173783483008. Its totient is φ = 172505662740.

The previous prime is 173144572847. The next prime is 173144572897. The reversal of 173144572873 is 378275441371.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 173144572873 - 2²⁵ = 173111018441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 173144572873.

It is not an unprimeable number, because it can be changed into a prime (173144570873) 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, 319454661 + ... + 319455202.

It is an arithmetic number, because the mean of its divisors is an integer number (43445870752).

Almost surely, 2^173144572873 is an apocalyptic number.

It is an amenable number.

173144572873 is a deficient number, since it is larger than the sum of its proper divisors (638910135).

173144572873 is an equidigital number, since it uses as much as digits as its factorization.

173144572873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638910134.

The product of its digits is 3951360, while the sum is 52.

The spelling of 173144572873 in words is "one hundred seventy-three billion, one hundred forty-four million, five hundred seventy-two thousand, eight hundred seventy-three".