17798945699 has 2 divisors, whose sum is σ = 17798945700. Its totient is φ = 17798945698.

The previous prime is 17798945687. The next prime is 17798945819. The reversal of 17798945699 is 99654989771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17798945699 - 2⁸ = 17798945443 is a prime.

It is not a weakly prime, because it can be changed into another prime (17798945299) 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, 8899472849 + 8899472850.

It is an arithmetic number, because the mean of its divisors is an integer number (8899472850).

Almost surely, 2^17798945699 is an apocalyptic number.

17798945699 is a deficient number, since it is larger than the sum of its proper divisors (1).

17798945699 is an equidigital number, since it uses as much as digits as its factorization.

17798945699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 74.

The spelling of 17798945699 in words is "seventeen billion, seven hundred ninety-eight million, nine hundred forty-five thousand, six hundred ninety-nine".