16791846517 has 2 divisors, whose sum is σ = 16791846518. Its totient is φ = 16791846516.

The previous prime is 16791846503. The next prime is 16791846653. The reversal of 16791846517 is 71564819761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11302666596 + 5489179921 = 106314^2 + 74089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16791846517 is a prime.

It is a super-2 number, since 2×16791846517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16791847517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8395923258 + 8395923259.

It is an arithmetic number, because the mean of its divisors is an integer number (8395923259).

Almost surely, 2^16791846517 is an apocalyptic number.

It is an amenable number.

16791846517 is a deficient number, since it is larger than the sum of its proper divisors (1).

16791846517 is an equidigital number, since it uses as much as digits as its factorization.

16791846517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The spelling of 16791846517 in words is "sixteen billion, seven hundred ninety-one million, eight hundred forty-six thousand, five hundred seventeen".