40002044400040 has 64 divisors (see below), whose sum is σ = 90593462655360. Its totient is φ = 15896166124800.

The previous prime is 40002044400029. The next prime is 40002044400041. The reversal of 40002044400040 is 4000444020004.

It is a junction number, because it is equal to n+sod(n) for n = 40002044399984 and 40002044400020.

It is not an unprimeable number, because it can be changed into a prime (40002044400041) 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, 36148965 + ... + 37239115.

It is an arithmetic number, because the mean of its divisors is an integer number (1415522853990).

Almost surely, 2^{40002044400040} is an apocalyptic number.

40002044400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40002044400040 is an abundant number, since it is smaller than the sum of its proper divisors (50591418255320).

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

40002044400040 is a wasteful number, since it uses less digits than its factorization.

40002044400040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096162 (or 1096158 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40002044400040 its reverse (4000444020004), we get a palindrome (44002488420044).

The spelling of 40002044400040 in words is "forty trillion, two billion, forty-four million, four hundred thousand, forty".