111991411077419 has 2 divisors, whose sum is σ = 111991411077420. Its totient is φ = 111991411077418.

The previous prime is 111991411077373. The next prime is 111991411077467. The reversal of 111991411077419 is 914770114199111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111991411077419 - 2⁸ = 111991411077163 is a prime.

It is a super-2 number, since 2×111991411077419² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111991411007419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55995705538709 + 55995705538710.

It is an arithmetic number, because the mean of its divisors is an integer number (55995705538710).

Almost surely, 2^{111991411077419} is an apocalyptic number.

111991411077419 is a deficient number, since it is larger than the sum of its proper divisors (1).

111991411077419 is an equidigital number, since it uses as much as digits as its factorization.

111991411077419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 56.

The spelling of 111991411077419 in words is "one hundred eleven trillion, nine hundred ninety-one billion, four hundred eleven million, seventy-seven thousand, four hundred nineteen".