111445104809 has 2 divisors, whose sum is σ = 111445104810. Its totient is φ = 111445104808.

The previous prime is 111445104787. The next prime is 111445104839. The reversal of 111445104809 is 908401544111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92140781209 + 19304323600 = 303547^2 + 138940^2 .

It is a cyclic number.

It is not a de Polignac number, because 111445104809 - 2⁸ = 111445104553 is a prime.

It is a super-2 number, since 2×111445104809² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111445104839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722552404 + 55722552405.

It is an arithmetic number, because the mean of its divisors is an integer number (55722552405).

Almost surely, 2^111445104809 is an apocalyptic number.

It is an amenable number.

111445104809 is a deficient number, since it is larger than the sum of its proper divisors (1).

111445104809 is an equidigital number, since it uses as much as digits as its factorization.

111445104809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 38.

The spelling of 111445104809 in words is "one hundred eleven billion, four hundred forty-five million, one hundred four thousand, eight hundred nine".