16491824513 has 2 divisors, whose sum is σ = 16491824514. Its totient is φ = 16491824512.

The previous prime is 16491824483. The next prime is 16491824533. The reversal of 16491824513 is 31542819461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8457929089 + 8033895424 = 91967^2 + 89632^2 .

It is a cyclic number.

It is not a de Polignac number, because 16491824513 - 2⁶ = 16491824449 is a prime.

It is not a weakly prime, because it can be changed into another prime (16491824533) 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, 8245912256 + 8245912257.

It is an arithmetic number, because the mean of its divisors is an integer number (8245912257).

Almost surely, 2^16491824513 is an apocalyptic number.

It is an amenable number.

16491824513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16491824513 is an equidigital number, since it uses as much as digits as its factorization.

16491824513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The spelling of 16491824513 in words is "sixteen billion, four hundred ninety-one million, eight hundred twenty-four thousand, five hundred thirteen".