111377309189 has 2 divisors, whose sum is σ = 111377309190. Its totient is φ = 111377309188.

The previous prime is 111377309167. The next prime is 111377309243. The reversal of 111377309189 is 981903773111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104658720100 + 6718589089 = 323510^2 + 81967^2 .

It is a cyclic number.

It is not a de Polignac number, because 111377309189 - 2¹² = 111377305093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111377309149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55688654594 + 55688654595.

It is an arithmetic number, because the mean of its divisors is an integer number (55688654595).

Almost surely, 2^111377309189 is an apocalyptic number.

It is an amenable number.

111377309189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111377309189 is an equidigital number, since it uses as much as digits as its factorization.

111377309189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 50.

The spelling of 111377309189 in words is "one hundred eleven billion, three hundred seventy-seven million, three hundred nine thousand, one hundred eighty-nine".