111516120589 has 2 divisors, whose sum is σ = 111516120590. Its totient is φ = 111516120588.

The previous prime is 111516120533. The next prime is 111516120607. The reversal of 111516120589 is 985021615111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80287222500 + 31228898089 = 283350^2 + 176717^2 .

It is a cyclic number.

It is not a de Polignac number, because 111516120589 - 2⁹ = 111516120077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111516120689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55758060294 + 55758060295.

It is an arithmetic number, because the mean of its divisors is an integer number (55758060295).

Almost surely, 2^111516120589 is an apocalyptic number.

It is an amenable number.

111516120589 is a deficient number, since it is larger than the sum of its proper divisors (1).

111516120589 is an equidigital number, since it uses as much as digits as its factorization.

111516120589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 40.

The spelling of 111516120589 in words is "one hundred eleven billion, five hundred sixteen million, one hundred twenty thousand, five hundred eighty-nine".