16826815879 has 2 divisors, whose sum is σ = 16826815880. Its totient is φ = 16826815878.

The previous prime is 16826815829. The next prime is 16826815909. The reversal of 16826815879 is 97851862861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16826815879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16826815829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8413407939 + 8413407940.

It is an arithmetic number, because the mean of its divisors is an integer number (8413407940).

Almost surely, 2^16826815879 is an apocalyptic number.

16826815879 is a deficient number, since it is larger than the sum of its proper divisors (1).

16826815879 is an equidigital number, since it uses as much as digits as its factorization.

16826815879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11612160, while the sum is 61.

The spelling of 16826815879 in words is "sixteen billion, eight hundred twenty-six million, eight hundred fifteen thousand, eight hundred seventy-nine".