404344543032040 has 64 divisors (see below), whose sum is σ = 979761136026960. Its totient is φ = 149295958302720.

The previous prime is 404344543032019. The next prime is 404344543032041. The reversal of 404344543032040 is 40230345443404.

It can be written as a sum of positive squares in 8 ways, for example, as 66833339127556 + 337511203904484 = 8175166^2 + 18371478^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 404344543031984 and 404344543032002.

It is not an unprimeable number, because it can be changed into a prime (404344543032041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183693642 + ... + 185881798.

Almost surely, 2^{404344543032040} is an apocalyptic number.

404344543032040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404344543032040 is an abundant number, since it is smaller than the sum of its proper divisors (575416592994920).

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

404344543032040 is a wasteful number, since it uses less digits than its factorization.

404344543032040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543542 (or 2543538 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 40.

Adding to 404344543032040 its reverse (40230345443404), we get a palindrome (444574888475444).

The spelling of 404344543032040 in words is "four hundred four trillion, three hundred forty-four billion, five hundred forty-three million, thirty-two thousand, forty".