111255919559 has 2 divisors, whose sum is σ = 111255919560. Its totient is φ = 111255919558.

The previous prime is 111255919487. The next prime is 111255919591. The reversal of 111255919559 is 955919552111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111255919559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111255919559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111255949559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55627959779 + 55627959780.

It is an arithmetic number, because the mean of its divisors is an integer number (55627959780).

Almost surely, 2^111255919559 is an apocalyptic number.

111255919559 is a deficient number, since it is larger than the sum of its proper divisors (1).

111255919559 is an equidigital number, since it uses as much as digits as its factorization.

111255919559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 911250, while the sum is 53.

The spelling of 111255919559 in words is "one hundred eleven billion, two hundred fifty-five million, nine hundred nineteen thousand, five hundred fifty-nine".