111011009959 has 2 divisors, whose sum is σ = 111011009960. Its totient is φ = 111011009958.

The previous prime is 111011009947. The next prime is 111011010059. The reversal of 111011009959 is 959900110111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111011009959 - 2¹¹ = 111011007911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011009359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505504979 + 55505504980.

It is an arithmetic number, because the mean of its divisors is an integer number (55505504980).

Almost surely, 2^111011009959 is an apocalyptic number.

111011009959 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011009959 is an equidigital number, since it uses as much as digits as its factorization.

111011009959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 37.

The spelling of 111011009959 in words is "one hundred eleven billion, eleven million, nine thousand, nine hundred fifty-nine".