18701717053223 has 2 divisors, whose sum is σ = 18701717053224. Its totient is φ = 18701717053222.

The previous prime is 18701717053183. The next prime is 18701717053237. The reversal of 18701717053223 is 32235071710781.

It is a strong prime.

It is an emirp because it is prime and its reverse (32235071710781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18701717053223 - 2³⁴ = 18684537184039 is a prime.

It is a super-2 number, since 2×18701717053223² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18701717055223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9350858526611 + 9350858526612.

It is an arithmetic number, because the mean of its divisors is an integer number (9350858526612).

Almost surely, 2^{18701717053223} is an apocalyptic number.

18701717053223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18701717053223 is an equidigital number, since it uses as much as digits as its factorization.

18701717053223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 18701717053223 in words is "eighteen trillion, seven hundred one billion, seven hundred seventeen million, fifty-three thousand, two hundred twenty-three".