16990767218 has 16 divisors (see below), whose sum is σ = 25833548160. Its totient is φ = 8380206000.

The previous prime is 16990767149. The next prime is 16990767221. The reversal of 16990767218 is 81276709961.

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, 100448 + ... + 209931.

It is an arithmetic number, because the mean of its divisors is an integer number (1614596760).

Almost surely, 2^16990767218 is an apocalyptic number.

16990767218 is a deficient number, since it is larger than the sum of its proper divisors (8842780942).

16990767218 is a wasteful number, since it uses less digits than its factorization.

16990767218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310753.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 16990767218 in words is "sixteen billion, nine hundred ninety million, seven hundred sixty-seven thousand, two hundred eighteen".