172182819713 has 4 divisors (see below), whose sum is σ = 172409079108. Its totient is φ = 171956560320.

The previous prime is 172182819701. The next prime is 172182819733. The reversal of 172182819713 is 317918281271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317918281271 = 1163 ⋅273360517.

It can be written as a sum of positive squares in 2 ways, for example, as 55090192369 + 117092627344 = 234713^2 + 342188^2 .

It is a cyclic number.

It is not a de Polignac number, because 172182819713 - 2²⁴ = 172166042497 is a prime.

It is a super-2 number, since 2×172182819713² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172182819733) 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, 113128556 + ... + 113130077.

It is an arithmetic number, because the mean of its divisors is an integer number (43102269777).

Almost surely, 2^172182819713 is an apocalyptic number.

It is an amenable number.

172182819713 is a deficient number, since it is larger than the sum of its proper divisors (226259395).

172182819713 is an equidigital number, since it uses as much as digits as its factorization.

172182819713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226259394.

The product of its digits is 338688, while the sum is 50.

The spelling of 172182819713 in words is "one hundred seventy-two billion, one hundred eighty-two million, eight hundred nineteen thousand, seven hundred thirteen".