16720973159 has 16 divisors (see below), whose sum is σ = 19039947264. Its totient is φ = 14535549600.

The previous prime is 16720973153. The next prime is 16720973177. The reversal of 16720973159 is 95137902761.

It is not a de Polignac number, because 16720973159 - 2⁸ = 16720972903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720973153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037654 + ... + 1053644.

It is an arithmetic number, because the mean of its divisors is an integer number (1189996704).

Almost surely, 2^16720973159 is an apocalyptic number.

16720973159 is a deficient number, since it is larger than the sum of its proper divisors (2318974105).

16720973159 is a wasteful number, since it uses less digits than its factorization.

16720973159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20158.

The product of its (nonzero) digits is 714420, while the sum is 50.

The spelling of 16720973159 in words is "sixteen billion, seven hundred twenty million, nine hundred seventy-three thousand, one hundred fifty-nine".