16391820559 has 2 divisors, whose sum is σ = 16391820560. Its totient is φ = 16391820558.

The previous prime is 16391820517. The next prime is 16391820569. The reversal of 16391820559 is 95502819361.

16391820559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16391820559 - 2²³ = 16383431951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16391820569) 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 as a sum of consecutive naturals, namely, 8195910279 + 8195910280.

It is an arithmetic number, because the mean of its divisors is an integer number (8195910280).

Almost surely, 2^16391820559 is an apocalyptic number.

16391820559 is a deficient number, since it is larger than the sum of its proper divisors (1).

16391820559 is an equidigital number, since it uses as much as digits as its factorization.

16391820559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 583200, while the sum is 49.

The spelling of 16391820559 in words is "sixteen billion, three hundred ninety-one million, eight hundred twenty thousand, five hundred fifty-nine".