17061768491 has 2 divisors, whose sum is σ = 17061768492. Its totient is φ = 17061768490.

The previous prime is 17061768481. The next prime is 17061768509. The reversal of 17061768491 is 19486716071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17061768491 - 2¹⁸ = 17061506347 is a prime.

It is a super-2 number, since 2×17061768491² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (17061768461) 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, 8530884245 + 8530884246.

It is an arithmetic number, because the mean of its divisors is an integer number (8530884246).

Almost surely, 2^17061768491 is an apocalyptic number.

17061768491 is a deficient number, since it is larger than the sum of its proper divisors (1).

17061768491 is an equidigital number, since it uses as much as digits as its factorization.

17061768491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 17061768491 in words is "seventeen billion, sixty-one million, seven hundred sixty-eight thousand, four hundred ninety-one".