40104544509 has 12 divisors (see below), whose sum is σ = 58460244700. Its totient is φ = 26491074624.

The previous prime is 40104544499. The next prime is 40104544531. The reversal of 40104544509 is 90544540104.

40104544509 is a `hidden beast` number, since 4 + 0 + 104 + 5 + 44 + 509 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33149484900 + 6955059609 = 182070^2 + 83397^2 .

It is not a de Polignac number, because 40104544509 - 2⁵ = 40104544477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40104544549) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20439664 + ... + 20441625.

Almost surely, 2^40104544509 is an apocalyptic number.

It is an amenable number.

40104544509 is a deficient number, since it is larger than the sum of its proper divisors (18355700191).

40104544509 is a wasteful number, since it uses less digits than its factorization.

40104544509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40881404 (or 40881401 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 40104544509 in words is "forty billion, one hundred four million, five hundred forty-four thousand, five hundred nine".