111983797559 has 2 divisors, whose sum is σ = 111983797560. Its totient is φ = 111983797558.

The previous prime is 111983797531. The next prime is 111983797561. The reversal of 111983797559 is 955797389111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111983797559 - 2²⁸ = 111715362103 is a prime.

Together with 111983797561, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111983797495 and 111983797504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111983797579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55991898779 + 55991898780.

It is an arithmetic number, because the mean of its divisors is an integer number (55991898780).

Almost surely, 2^111983797559 is an apocalyptic number.

111983797559 is a deficient number, since it is larger than the sum of its proper divisors (1).

111983797559 is an equidigital number, since it uses as much as digits as its factorization.

111983797559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21432600, while the sum is 65.

The spelling of 111983797559 in words is "one hundred eleven billion, nine hundred eighty-three million, seven hundred ninety-seven thousand, five hundred fifty-nine".