8040408844840 has 64 divisors (see below), whose sum is σ = 18258555546000. Its totient is φ = 3186367027200.

The previous prime is 8040408844837. The next prime is 8040408844849. The reversal of 8040408844840 is 484488040408.

It can be written as a sum of positive squares in 8 ways, for example, as 3169674608164 + 4870734236676 = 1780358^2 + 2206974^2 .

It is not an unprimeable number, because it can be changed into a prime (8040408844849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51374226 + ... + 51530494.

Almost surely, 2^{8040408844840} is an apocalyptic number.

It is an amenable number.

8040408844840 is an abundant number, since it is smaller than the sum of its proper divisors (10218146701160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8040408844840 is a wasteful number, since it uses less digits than its factorization.

8040408844840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168190 (or 168186 counting only the distinct ones).

The product of its (nonzero) digits is 4194304, while the sum is 52.

The spelling of 8040408844840 in words is "eight trillion, forty billion, four hundred eight million, eight hundred forty-four thousand, eight hundred forty".