16807899816 has 128 divisors (see below), whose sum is σ = 48419884800. Its totient is φ = 5465750400.

The previous prime is 16807899809. The next prime is 16807899839. The reversal of 16807899816 is 61899870861.

16807899816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 705621 + ... + 729051.

It is an arithmetic number, because the mean of its divisors is an integer number (378280350).

Almost surely, 2^16807899816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16807899816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24209942400).

16807899816 is an abundant number, since it is smaller than the sum of its proper divisors (31611984984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16807899816 is an equidigital number, since it uses as much as digits as its factorization.

16807899816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23499 (or 23477 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 63.

The spelling of 16807899816 in words is "sixteen billion, eight hundred seven million, eight hundred ninety-nine thousand, eight hundred sixteen".