171283525382172 has 48 divisors (see below), whose sum is σ = 456758495621120. Its totient is φ = 48937889973312.

The previous prime is 171283525382159. The next prime is 171283525382197. The reversal of 171283525382172 is 271283525382171.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10763013 + ... + 21410499.

Almost surely, 2^{171283525382172} is an apocalyptic number.

171283525382172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

171283525382172 is an abundant number, since it is smaller than the sum of its proper divisors (285474970238948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171283525382172 is a wasteful number, since it uses less digits than its factorization.

171283525382172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10839010 (or 10839008 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 57.

Subtracting 171283525382172 from its reverse (271283525382171), we obtain a palindrome (99999999999999).

The spelling of 171283525382172 in words is "one hundred seventy-one trillion, two hundred eighty-three billion, five hundred twenty-five million, three hundred eighty-two thousand, one hundred seventy-two".