17910993899 has 2 divisors, whose sum is σ = 17910993900. Its totient is φ = 17910993898.

The previous prime is 17910993887. The next prime is 17910993959. The reversal of 17910993899 is 99839901971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17910993899 - 2²⁸ = 17642558443 is a prime.

It is not a weakly prime, because it can be changed into another prime (17910993599) 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, 8955496949 + 8955496950.

It is an arithmetic number, because the mean of its divisors is an integer number (8955496950).

Almost surely, 2^17910993899 is an apocalyptic number.

17910993899 is a deficient number, since it is larger than the sum of its proper divisors (1).

17910993899 is an equidigital number, since it uses as much as digits as its factorization.

17910993899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9920232, while the sum is 65.

The spelling of 17910993899 in words is "seventeen billion, nine hundred ten million, nine hundred ninety-three thousand, eight hundred ninety-nine".