111279471419 has 2 divisors, whose sum is σ = 111279471420. Its totient is φ = 111279471418.

The previous prime is 111279471389. The next prime is 111279471421. The reversal of 111279471419 is 914174972111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111279471419 is a prime.

It is a super-2 number, since 2×111279471419² (a number of 23 digits) contains 22 as substring.

Together with 111279471421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111279471319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55639735709 + 55639735710.

It is an arithmetic number, because the mean of its divisors is an integer number (55639735710).

Almost surely, 2^111279471419 is an apocalyptic number.

111279471419 is a deficient number, since it is larger than the sum of its proper divisors (1).

111279471419 is an equidigital number, since it uses as much as digits as its factorization.

111279471419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 47.

The spelling of 111279471419 in words is "one hundred eleven billion, two hundred seventy-nine million, four hundred seventy-one thousand, four hundred nineteen".