111664440663 has 16 divisors (see below), whose sum is σ = 159148475136. Its totient is φ = 69469568960.

The previous prime is 111664440623. The next prime is 111664440673. The reversal of 111664440663 is 366044466111.

It is a cyclic number.

It is not a de Polignac number, because 111664440663 - 2²⁵ = 111630886231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111664440623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19732845 + ... + 19738502.

It is an arithmetic number, because the mean of its divisors is an integer number (9946779696).

Almost surely, 2^111664440663 is an apocalyptic number.

111664440663 is a deficient number, since it is larger than the sum of its proper divisors (47484034473).

111664440663 is a wasteful number, since it uses less digits than its factorization.

111664440663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39471414.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 111664440663 in words is "one hundred eleven billion, six hundred sixty-four million, four hundred forty thousand, six hundred sixty-three".