16738216868 has 12 divisors (see below), whose sum is σ = 30301944540. Its totient is φ = 8080518432.

The previous prime is 16738216867. The next prime is 16738216879. The reversal of 16738216868 is 86861283761.

It can be written as a sum of positive squares in 2 ways, for example, as 8588099584 + 8150117284 = 92672^2 + 90278^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16738216867) 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, 72147371 + ... + 72147602.

It is an arithmetic number, because the mean of its divisors is an integer number (2525162045).

Almost surely, 2^16738216868 is an apocalyptic number.

It is an amenable number.

16738216868 is a deficient number, since it is larger than the sum of its proper divisors (13563727672).

16738216868 is a wasteful number, since it uses less digits than its factorization.

16738216868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144295006 (or 144295004 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The spelling of 16738216868 in words is "sixteen billion, seven hundred thirty-eight million, two hundred sixteen thousand, eight hundred sixty-eight".