18327011817263 has 2 divisors, whose sum is σ = 18327011817264. Its totient is φ = 18327011817262.

The previous prime is 18327011817217. The next prime is 18327011817269. The reversal of 18327011817263 is 36271811072381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18327011817263 - 2²⁰ = 18327010768687 is a prime.

It is a super-2 number, since 2×18327011817263² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18327011817269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9163505908631 + 9163505908632.

It is an arithmetic number, because the mean of its divisors is an integer number (9163505908632).

Almost surely, 2^{18327011817263} is an apocalyptic number.

18327011817263 is a deficient number, since it is larger than the sum of its proper divisors (1).

18327011817263 is an equidigital number, since it uses as much as digits as its factorization.

18327011817263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 18327011817263 in words is "eighteen trillion, three hundred twenty-seven billion, eleven million, eight hundred seventeen thousand, two hundred sixty-three".