111640044565 has 64 divisors (see below), whose sum is σ = 164959441920. Its totient is φ = 70787543040.

The previous prime is 111640044553. The next prime is 111640044569. The reversal of 111640044565 is 565440046111.

It is not a de Polignac number, because 111640044565 - 2⁵ = 111640044533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111640044569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 56582919 + ... + 56584891.

It is an arithmetic number, because the mean of its divisors is an integer number (2577491280).

Almost surely, 2^111640044565 is an apocalyptic number.

It is an amenable number.

111640044565 is a deficient number, since it is larger than the sum of its proper divisors (53319397355).

111640044565 is a wasteful number, since it uses less digits than its factorization.

111640044565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3622.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 111640044565 in words is "one hundred eleven billion, six hundred forty million, forty-four thousand, five hundred sixty-five".