172574743147 has 4 divisors (see below), whose sum is σ = 172609270000. Its totient is φ = 172540216296.

The previous prime is 172574743141. The next prime is 172574743151. The reversal of 172574743147 is 741347475271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172574743147 - 2²³ = 172566354539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172574743094 and 172574743103.

It is not an unprimeable number, because it can be changed into a prime (172574743141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17255928 + ... + 17265925.

It is an arithmetic number, because the mean of its divisors is an integer number (43152317500).

Almost surely, 2^172574743147 is an apocalyptic number.

172574743147 is a deficient number, since it is larger than the sum of its proper divisors (34526853).

172574743147 is an equidigital number, since it uses as much as digits as its factorization.

172574743147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34526852.

The product of its digits is 4609920, while the sum is 52.

The spelling of 172574743147 in words is "one hundred seventy-two billion, five hundred seventy-four million, seven hundred forty-three thousand, one hundred forty-seven".