111905409107 has 2 divisors, whose sum is σ = 111905409108. Its totient is φ = 111905409106.

The previous prime is 111905409101. The next prime is 111905409137. The reversal of 111905409107 is 701904509111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111905409107 - 2²⁶ = 111838300243 is a prime.

It is not a weakly prime, because it can be changed into another prime (111905409101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55952704553 + 55952704554.

It is an arithmetic number, because the mean of its divisors is an integer number (55952704554).

Almost surely, 2^111905409107 is an apocalyptic number.

111905409107 is a deficient number, since it is larger than the sum of its proper divisors (1).

111905409107 is an equidigital number, since it uses as much as digits as its factorization.

111905409107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 38.

The spelling of 111905409107 in words is "one hundred eleven billion, nine hundred five million, four hundred nine thousand, one hundred seven".