40404022044240 has 40 divisors (see below), whose sum is σ = 125252468337888. Its totient is φ = 10774405878400.

The previous prime is 40404022044223. The next prime is 40404022044277. The reversal of 40404022044240 is 4244022040404.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40404022044198 and 40404022044207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84175045686 + ... + 84175046165.

Almost surely, 2^{40404022044240} is an apocalyptic number.

40404022044240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40404022044240 is an abundant number, since it is smaller than the sum of its proper divisors (84848446293648).

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

40404022044240 is a wasteful number, since it uses less digits than its factorization.

40404022044240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168350091867 (or 168350091861 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 40404022044240 its reverse (4244022040404), we get a palindrome (44648044084644).

The spelling of 40404022044240 in words is "forty trillion, four hundred four billion, twenty-two million, forty-four thousand, two hundred forty".