145873174573 has 4 divisors (see below), whose sum is σ = 166712199520. Its totient is φ = 125034149628.

The previous prime is 145873174549. The next prime is 145873174607. The reversal of 145873174573 is 375471378541.

It is a happy number.

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 145873174573 - 2³³ = 137283239981 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 (145873174973) 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, 10419512463 + ... + 10419512476.

It is an arithmetic number, because the mean of its divisors is an integer number (41678049880).

Almost surely, 2^145873174573 is an apocalyptic number.

It is an amenable number.

145873174573 is a deficient number, since it is larger than the sum of its proper divisors (20839024947).

145873174573 is an equidigital number, since it uses as much as digits as its factorization.

145873174573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20839024946.

The product of its digits is 9878400, while the sum is 55.

The spelling of 145873174573 in words is "one hundred forty-five billion, eight hundred seventy-three million, one hundred seventy-four thousand, five hundred seventy-three".