171085009884 has 24 divisors (see below), whose sum is σ = 399231571200. Its totient is φ = 57023591664.

The previous prime is 171085009883. The next prime is 171085009913. The reversal of 171085009884 is 488900580171.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171085009883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441334 + ... + 732765.

It is an arithmetic number, because the mean of its divisors is an integer number (16634648800).

Almost surely, 2^171085009884 is an apocalyptic number.

It is an amenable number.

171085009884 is an abundant number, since it is smaller than the sum of its proper divisors (228146561316).

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

171085009884 is a wasteful number, since it uses less digits than its factorization.

171085009884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186249 (or 1186247 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 51.

The spelling of 171085009884 in words is "one hundred seventy-one billion, eighty-five million, nine thousand, eight hundred eighty-four".