16689316513 has 2 divisors, whose sum is σ = 16689316514. Its totient is φ = 16689316512.

The previous prime is 16689316499. The next prime is 16689316529. The reversal of 16689316513 is 31561398661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16452679824 + 236636689 = 128268^2 + 15383^2 .

It is a cyclic number.

It is not a de Polignac number, because 16689316513 - 2²¹ = 16687219361 is a prime.

It is not a weakly prime, because it can be changed into another prime (16689316543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8344658256 + 8344658257.

It is an arithmetic number, because the mean of its divisors is an integer number (8344658257).

Almost surely, 2^16689316513 is an apocalyptic number.

It is an amenable number.

16689316513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16689316513 is an equidigital number, since it uses as much as digits as its factorization.

16689316513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 49.

The spelling of 16689316513 in words is "sixteen billion, six hundred eighty-nine million, three hundred sixteen thousand, five hundred thirteen".