16505245459 has 2 divisors, whose sum is σ = 16505245460. Its totient is φ = 16505245458.

The previous prime is 16505245453. The next prime is 16505245511. The reversal of 16505245459 is 95454250561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16505245459 - 2⁷ = 16505245331 is a prime.

It is not a weakly prime, because it can be changed into another prime (16505245453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8252622729 + 8252622730.

It is an arithmetic number, because the mean of its divisors is an integer number (8252622730).

Almost surely, 2^16505245459 is an apocalyptic number.

16505245459 is a deficient number, since it is larger than the sum of its proper divisors (1).

16505245459 is an equidigital number, since it uses as much as digits as its factorization.

16505245459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 16505245459 in words is "sixteen billion, five hundred five million, two hundred forty-five thousand, four hundred fifty-nine".