40080844809 has 6 divisors (see below), whose sum is σ = 57894553626. Its totient is φ = 26720563200.

The previous prime is 40080844789. The next prime is 40080844823. The reversal of 40080844809 is 90844808004.

It can be written as a sum of positive squares in only one way, i.e., 37182637584 + 2898207225 = 192828^2 + 53835^2 .

It is not a de Polignac number, because 40080844809 - 2⁵ = 40080844777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40080844829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2226713592 + ... + 2226713609.

It is an arithmetic number, because the mean of its divisors is an integer number (9649092271).

Almost surely, 2^40080844809 is an apocalyptic number.

It is an amenable number.

40080844809 is a deficient number, since it is larger than the sum of its proper divisors (17813708817).

40080844809 is a wasteful number, since it uses less digits than its factorization.

40080844809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453427207 (or 4453427204 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 40080844809 in words is "forty billion, eighty million, eight hundred forty-four thousand, eight hundred nine".