16885808399 has 4 divisors (see below), whose sum is σ = 17879091264. Its totient is φ = 15892525536.

The previous prime is 16885808389. The next prime is 16885808449. The reversal of 16885808399 is 99380858861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16885808399 - 2²⁴ = 16869031183 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 (16885808309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496641407 + ... + 496641440.

It is an arithmetic number, because the mean of its divisors is an integer number (4469772816).

Almost surely, 2^16885808399 is an apocalyptic number.

16885808399 is a deficient number, since it is larger than the sum of its proper divisors (993282865).

16885808399 is an equidigital number, since it uses as much as digits as its factorization.

16885808399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993282864.

The product of its (nonzero) digits is 29859840, while the sum is 65.

The spelling of 16885808399 in words is "sixteen billion, eight hundred eighty-five million, eight hundred eight thousand, three hundred ninety-nine".