171785085052 has 12 divisors (see below), whose sum is σ = 343570170160. Its totient is φ = 73622179296.

The previous prime is 171785084987. The next prime is 171785085053. The reversal of 171785085052 is 250580587171.

171785085052 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 171785084987 and 171785085005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171785085053) 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, 3067590777 + ... + 3067590832.

Almost surely, 2^171785085052 is an apocalyptic number.

It is an amenable number.

171785085052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

171785085052 is a wasteful number, since it uses less digits than its factorization.

171785085052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6135181620 (or 6135181618 counting only the distinct ones).

The product of its (nonzero) digits is 784000, while the sum is 49.

The spelling of 171785085052 in words is "one hundred seventy-one billion, seven hundred eighty-five million, eighty-five thousand, fifty-two".