111318185009 has 2 divisors, whose sum is σ = 111318185010. Its totient is φ = 111318185008.

The previous prime is 111318184927. The next prime is 111318185029. The reversal of 111318185009 is 900581813111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89983200784 + 21334984225 = 299972^2 + 146065^2 .

It is a cyclic number.

It is not a de Polignac number, because 111318185009 - 2⁸ = 111318184753 is a prime.

It is not a weakly prime, because it can be changed into another prime (111318185029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55659092504 + 55659092505.

It is an arithmetic number, because the mean of its divisors is an integer number (55659092505).

Almost surely, 2^111318185009 is an apocalyptic number.

It is an amenable number.

111318185009 is a deficient number, since it is larger than the sum of its proper divisors (1).

111318185009 is an equidigital number, since it uses as much as digits as its factorization.

111318185009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 38.

The spelling of 111318185009 in words is "one hundred eleven billion, three hundred eighteen million, one hundred eighty-five thousand, nine".