40040880808440 has 128 divisors (see below), whose sum is σ = 121362255443520. Its totient is φ = 10567468032000.

The previous prime is 40040880808403. The next prime is 40040880808441. The reversal of 40040880808440 is 4480808804004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040880808440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040880808441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28610610 + ... + 29977470.

Almost surely, 2^{40040880808440} is an apocalyptic number.

40040880808440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40040880808440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60681127721760).

40040880808440 is an abundant number, since it is smaller than the sum of its proper divisors (81321374635080).

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

40040880808440 is a wasteful number, since it uses less digits than its factorization.

40040880808440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369393 (or 1369389 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 48.

The spelling of 40040880808440 in words is "forty trillion, forty billion, eight hundred eighty million, eight hundred eight thousand, four hundred forty".