171622285223 has 4 divisors (see below), whose sum is σ = 171623323488. Its totient is φ = 171621246960.

The previous prime is 171622285193. The next prime is 171622285259. The reversal of 171622285223 is 322582226171.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 322582226171 = 34157 ⋅9444103.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171622285223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171622285823) 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, 209711 + ... + 622272.

It is an arithmetic number, because the mean of its divisors is an integer number (42905830872).

Almost surely, 2^171622285223 is an apocalyptic number.

171622285223 is a deficient number, since it is larger than the sum of its proper divisors (1038265).

171622285223 is an equidigital number, since it uses as much as digits as its factorization.

171622285223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038264.

The product of its digits is 161280, while the sum is 41.

The spelling of 171622285223 in words is "one hundred seventy-one billion, six hundred twenty-two million, two hundred eighty-five thousand, two hundred twenty-three".