16931016809 has 8 divisors (see below), whose sum is σ = 19381934208. Its totient is φ = 14488149600.

The previous prime is 16931016799. The next prime is 16931016821. The reversal of 16931016809 is 90861013961.

It is a happy number.

16931016809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16931016809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16931016809.

It is not an unprimeable number, because it can be changed into a prime (16931016829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008037 + ... + 2016450.

It is an arithmetic number, because the mean of its divisors is an integer number (2422741776).

Almost surely, 2^16931016809 is an apocalyptic number.

It is an amenable number.

16931016809 is a deficient number, since it is larger than the sum of its proper divisors (2450917399).

16931016809 is an equidigital number, since it uses as much as digits as its factorization.

16931016809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025095.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 16931016809 in words is "sixteen billion, nine hundred thirty-one million, sixteen thousand, eight hundred nine".