111111110489 has 2 divisors, whose sum is σ = 111111110490. Its totient is φ = 111111110488.

The previous prime is 111111110471. The next prime is 111111110521. The reversal of 111111110489 is 984011111111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62850490000 + 48260620489 = 250700^2 + 219683^2 .

It is a cyclic number.

It is not a de Polignac number, because 111111110489 - 2⁸ = 111111110233 is a prime.

It is not a weakly prime, because it can be changed into another prime (111111110449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555555244 + 55555555245.

It is an arithmetic number, because the mean of its divisors is an integer number (55555555245).

Almost surely, 2^111111110489 is an apocalyptic number.

It is an amenable number.

111111110489 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111110489 is an equidigital number, since it uses as much as digits as its factorization.

111111110489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 29.

The spelling of 111111110489 in words is "one hundred eleven billion, one hundred eleven million, one hundred ten thousand, four hundred eighty-nine".