17985329718 has 8 divisors (see below), whose sum is σ = 35970659448. Its totient is φ = 5995109904.

The previous prime is 17985329717. The next prime is 17985329753. The reversal of 17985329718 is 81792358971.

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

17985329718 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17985329717) 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, 1498777471 + ... + 1498777482.

It is an arithmetic number, because the mean of its divisors is an integer number (4496332431).

Almost surely, 2^17985329718 is an apocalyptic number.

17985329718 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.

17985329718 is a wasteful number, since it uses less digits than its factorization.

17985329718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997554958.

The product of its digits is 7620480, while the sum is 60.

The spelling of 17985329718 in words is "seventeen billion, nine hundred eighty-five million, three hundred twenty-nine thousand, seven hundred eighteen".