18611860336327 has 2 divisors, whose sum is σ = 18611860336328. Its totient is φ = 18611860336326.

The previous prime is 18611860336319. The next prime is 18611860336411. The reversal of 18611860336327 is 72363306811681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18611860336327 - 2³ = 18611860336319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18611860336127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9305930168163 + 9305930168164.

It is an arithmetic number, because the mean of its divisors is an integer number (9305930168164).

Almost surely, 2^{18611860336327} is an apocalyptic number.

18611860336327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18611860336327 is an equidigital number, since it uses as much as digits as its factorization.

18611860336327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 18611860336327 in words is "eighteen trillion, six hundred eleven billion, eight hundred sixty million, three hundred thirty-six thousand, three hundred twenty-seven".