18701717053699 has 2 divisors, whose sum is σ = 18701717053700. Its totient is φ = 18701717053698.

The previous prime is 18701717053577. The next prime is 18701717053717. The reversal of 18701717053699 is 99635071710781.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18701717053699 - 2²⁵ = 18701683499267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18701717053699.

It is not a weakly prime, because it can be changed into another prime (18701717050699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9350858526849 + 9350858526850.

It is an arithmetic number, because the mean of its divisors is an integer number (9350858526850).

Almost surely, 2^{18701717053699} is an apocalyptic number.

18701717053699 is a deficient number, since it is larger than the sum of its proper divisors (1).

18701717053699 is an equidigital number, since it uses as much as digits as its factorization.

18701717053699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20003760, while the sum is 64.

The spelling of 18701717053699 in words is "eighteen trillion, seven hundred one billion, seven hundred seventeen million, fifty-three thousand, six hundred ninety-nine".