18155112650111 has 2 divisors, whose sum is σ = 18155112650112. Its totient is φ = 18155112650110.

The previous prime is 18155112650093. The next prime is 18155112650141. The reversal of 18155112650111 is 11105621155181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18155112650111 - 2³⁰ = 18154038908287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18155112650141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9077556325055 + 9077556325056.

It is an arithmetic number, because the mean of its divisors is an integer number (9077556325056).

Almost surely, 2^{18155112650111} is an apocalyptic number.

18155112650111 is a deficient number, since it is larger than the sum of its proper divisors (1).

18155112650111 is an equidigital number, since it uses as much as digits as its factorization.

18155112650111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 38.

The spelling of 18155112650111 in words is "eighteen trillion, one hundred fifty-five billion, one hundred twelve million, six hundred fifty thousand, one hundred eleven".