111437749982789 has 2 divisors, whose sum is σ = 111437749982790. Its totient is φ = 111437749982788.

The previous prime is 111437749982729. The next prime is 111437749982851. The reversal of 111437749982789 is 987289947734111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95749551928900 + 15688198053889 = 9785170^2 + 3960833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111437749982789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111437749982729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55718874991394 + 55718874991395.

It is an arithmetic number, because the mean of its divisors is an integer number (55718874991395).

Almost surely, 2^{111437749982789} is an apocalyptic number.

It is an amenable number.

111437749982789 is a deficient number, since it is larger than the sum of its proper divisors (1).

111437749982789 is an equidigital number, since it uses as much as digits as its factorization.

111437749982789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536288768, while the sum is 80.

The spelling of 111437749982789 in words is "one hundred eleven trillion, four hundred thirty-seven billion, seven hundred forty-nine million, nine hundred eighty-two thousand, seven hundred eighty-nine".