18911167414199 has 2 divisors, whose sum is σ = 18911167414200. Its totient is φ = 18911167414198.

The previous prime is 18911167414129. The next prime is 18911167414273. The reversal of 18911167414199 is 99141476111981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18911167414199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18911167414129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9455583707099 + 9455583707100.

It is an arithmetic number, because the mean of its divisors is an integer number (9455583707100).

Almost surely, 2^{18911167414199} is an apocalyptic number.

18911167414199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18911167414199 is an equidigital number, since it uses as much as digits as its factorization.

18911167414199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 62.

The spelling of 18911167414199 in words is "eighteen trillion, nine hundred eleven billion, one hundred sixty-seven million, four hundred fourteen thousand, one hundred ninety-nine".