171872164285 has 8 divisors (see below), whose sum is σ = 215213840640. Its totient is φ = 131519569104.

The previous prime is 171872164259. The next prime is 171872164307. The reversal of 171872164285 is 582461278171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 171872164285 - 2¹⁷ = 171872033213 is a prime.

It is a super-2 number, since 2×171872164285² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747270165 + ... + 747270394.

It is an arithmetic number, because the mean of its divisors is an integer number (26901730080).

Almost surely, 2^171872164285 is an apocalyptic number.

It is an amenable number.

171872164285 is a deficient number, since it is larger than the sum of its proper divisors (43341676355).

171872164285 is a wasteful number, since it uses less digits than its factorization.

171872164285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494540587.

The product of its digits is 1505280, while the sum is 52.

The spelling of 171872164285 in words is "one hundred seventy-one billion, eight hundred seventy-two million, one hundred sixty-four thousand, two hundred eighty-five".