16823623679 has 2 divisors, whose sum is σ = 16823623680. Its totient is φ = 16823623678.

The previous prime is 16823623667. The next prime is 16823623693. The reversal of 16823623679 is 97632632861.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16823623679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16823623679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16823623699) 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 as a sum of consecutive naturals, namely, 8411811839 + 8411811840.

It is an arithmetic number, because the mean of its divisors is an integer number (8411811840).

Almost surely, 2^16823623679 is an apocalyptic number.

16823623679 is a deficient number, since it is larger than the sum of its proper divisors (1).

16823623679 is an equidigital number, since it uses as much as digits as its factorization.

16823623679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 53.

The spelling of 16823623679 in words is "sixteen billion, eight hundred twenty-three million, six hundred twenty-three thousand, six hundred seventy-nine".