16684810538 has 16 divisors (see below), whose sum is σ = 27817559136. Its totient is φ = 7440909840.

The previous prime is 16684810511. The next prime is 16684810561. The reversal of 16684810538 is 83501848661.

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, 7153556 + ... + 7155887.

It is an arithmetic number, because the mean of its divisors is an integer number (1738597446).

Almost surely, 2^16684810538 is an apocalyptic number.

16684810538 is a deficient number, since it is larger than the sum of its proper divisors (11132748598).

16684810538 is a wasteful number, since it uses less digits than its factorization.

16684810538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14309509.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 16684810538 in words is "sixteen billion, six hundred eighty-four million, eight hundred ten thousand, five hundred thirty-eight".