111606565111 has 2 divisors, whose sum is σ = 111606565112. Its totient is φ = 111606565110.

The previous prime is 111606565043. The next prime is 111606565129. The reversal of 111606565111 is 111565606111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111606565111 - 2⁹ = 111606564599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111606565181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55803282555 + 55803282556.

It is an arithmetic number, because the mean of its divisors is an integer number (55803282556).

Almost surely, 2^111606565111 is an apocalyptic number.

111606565111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111606565111 is an equidigital number, since it uses as much as digits as its factorization.

111606565111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 34.

The spelling of 111606565111 in words is "one hundred eleven billion, six hundred six million, five hundred sixty-five thousand, one hundred eleven".