16715311649 has 2 divisors, whose sum is σ = 16715311650. Its totient is φ = 16715311648.

The previous prime is 16715311643. The next prime is 16715311681. The reversal of 16715311649 is 94611351761.

16715311649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9816846400 + 6898465249 = 99080^2 + 83057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16715311649 is a prime.

It is not a weakly prime, because it can be changed into another prime (16715311643) 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, 8357655824 + 8357655825.

It is an arithmetic number, because the mean of its divisors is an integer number (8357655825).

Almost surely, 2^16715311649 is an apocalyptic number.

It is an amenable number.

16715311649 is a deficient number, since it is larger than the sum of its proper divisors (1).

16715311649 is an equidigital number, since it uses as much as digits as its factorization.

16715311649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The spelling of 16715311649 in words is "sixteen billion, seven hundred fifteen million, three hundred eleven thousand, six hundred forty-nine".