16985785372 has 12 divisors (see below), whose sum is σ = 29727227880. Its totient is φ = 8492291696.

The previous prime is 16985785351. The next prime is 16985785381. The reversal of 16985785372 is 27358758961.

16985785372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16985785372.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83347 + ... + 202282.

It is an arithmetic number, because the mean of its divisors is an integer number (2477268990).

Almost surely, 2^16985785372 is an apocalyptic number.

It is an amenable number.

16985785372 is a deficient number, since it is larger than the sum of its proper divisors (12741442508).

16985785372 is a wasteful number, since it uses less digits than its factorization.

16985785372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300500 (or 300498 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 61.

The spelling of 16985785372 in words is "sixteen billion, nine hundred eighty-five million, seven hundred eighty-five thousand, three hundred seventy-two".