17170201985 has 8 divisors (see below), whose sum is σ = 20605142016. Its totient is φ = 13735561840.

The previous prime is 17170201921. The next prime is 17170202111. The reversal of 17170201985 is 58910207171.

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

It is not a de Polignac number, because 17170201985 - 2⁶ = 17170201921 is a prime.

It is a Duffinian 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, 80192 + ... + 201918.

It is an arithmetic number, because the mean of its divisors is an integer number (2575642752).

Almost surely, 2^17170201985 is an apocalyptic number.

It is an amenable number.

17170201985 is a deficient number, since it is larger than the sum of its proper divisors (3434940031).

17170201985 is a wasteful number, since it uses less digits than its factorization.

17170201985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149943.

The product of its (nonzero) digits is 35280, while the sum is 41.

The spelling of 17170201985 in words is "seventeen billion, one hundred seventy million, two hundred one thousand, nine hundred eighty-five".