16695968784 has 80 divisors (see below), whose sum is σ = 47096063040. Its totient is φ = 5054676480.

The previous prime is 16695968777. The next prime is 16695968831. The reversal of 16695968784 is 48786959661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575622 + ... + 603930.

It is an arithmetic number, because the mean of its divisors is an integer number (588700788).

Almost surely, 2^16695968784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16695968784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23548031520).

16695968784 is an abundant number, since it is smaller than the sum of its proper divisors (30400094256).

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

16695968784 is a wasteful number, since it uses less digits than its factorization.

16695968784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29448 (or 29442 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 69.

The spelling of 16695968784 in words is "sixteen billion, six hundred ninety-five million, nine hundred sixty-eight thousand, seven hundred eighty-four".