17516916749 has 2 divisors, whose sum is σ = 17516916750. Its totient is φ = 17516916748.

The previous prime is 17516916707. The next prime is 17516916871. The reversal of 17516916749 is 94761961571.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13898052100 + 3618864649 = 117890^2 + 60157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17516916749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17516916694 and 17516916703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17516916649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8758458374 + 8758458375.

It is an arithmetic number, because the mean of its divisors is an integer number (8758458375).

Almost surely, 2^17516916749 is an apocalyptic number.

It is an amenable number.

17516916749 is a deficient number, since it is larger than the sum of its proper divisors (1).

17516916749 is an equidigital number, since it uses as much as digits as its factorization.

17516916749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 56.

The spelling of 17516916749 in words is "seventeen billion, five hundred sixteen million, nine hundred sixteen thousand, seven hundred forty-nine".