171349825123 has 4 divisors (see below), whose sum is σ = 172401051208. Its totient is φ = 170298599040.

The previous prime is 171349825043. The next prime is 171349825133. The reversal of 171349825123 is 321528943171.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321528943171 = 167 ⋅1925323013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171349825123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171349825133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525612798 + ... + 525613123.

It is an arithmetic number, because the mean of its divisors is an integer number (43100262802).

Almost surely, 2^171349825123 is an apocalyptic number.

171349825123 is a deficient number, since it is larger than the sum of its proper divisors (1051226085).

171349825123 is a wasteful number, since it uses less digits than its factorization.

171349825123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051226084.

The product of its digits is 362880, while the sum is 46.

The spelling of 171349825123 in words is "one hundred seventy-one billion, three hundred forty-nine million, eight hundred twenty-five thousand, one hundred twenty-three".