111336272609 has 2 divisors, whose sum is σ = 111336272610. Its totient is φ = 111336272608.

The previous prime is 111336272591. The next prime is 111336272629. The reversal of 111336272609 is 906272633111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98379459025 + 12956813584 = 313655^2 + 113828^2 .

It is an emirp because it is prime and its reverse (906272633111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111336272609 - 2⁸ = 111336272353 is a prime.

It is not a weakly prime, because it can be changed into another prime (111336272629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55668136304 + 55668136305.

It is an arithmetic number, because the mean of its divisors is an integer number (55668136305).

Almost surely, 2^111336272609 is an apocalyptic number.

It is an amenable number.

111336272609 is a deficient number, since it is larger than the sum of its proper divisors (1).

111336272609 is an equidigital number, since it uses as much as digits as its factorization.

111336272609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 111336272609 in words is "one hundred eleven billion, three hundred thirty-six million, two hundred seventy-two thousand, six hundred nine".