171129748255 has 16 divisors (see below), whose sum is σ = 207982540800. Its totient is φ = 135153027360.

The previous prime is 171129748217. The next prime is 171129748267. The reversal of 171129748255 is 552847921171.

It is a happy number.

It is not a de Polignac number, because 171129748255 - 2²¹ = 171127651103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535306 + ... + 3583384.

It is an arithmetic number, because the mean of its divisors is an integer number (12998908800).

Almost surely, 2^171129748255 is an apocalyptic number.

171129748255 is a deficient number, since it is larger than the sum of its proper divisors (36852792545).

171129748255 is an equidigital number, since it uses as much as digits as its factorization.

171129748255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57174.

The product of its digits is 1411200, while the sum is 52.

The spelling of 171129748255 in words is "one hundred seventy-one billion, one hundred twenty-nine million, seven hundred forty-eight thousand, two hundred fifty-five".