404421750544 has 20 divisors (see below), whose sum is σ = 895505305024. Its totient is φ = 173323607328.

The previous prime is 404421750463. The next prime is 404421750611. The reversal of 404421750544 is 445057124404.

It is a junction number, because it is equal to n+sod(n) for n = 404421750497 and 404421750506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805454132 + ... + 1805454355.

Almost surely, 2^404421750544 is an apocalyptic number.

It is an amenable number.

404421750544 is an abundant number, since it is smaller than the sum of its proper divisors (491083554480).

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

404421750544 is a wasteful number, since it uses less digits than its factorization.

404421750544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610908502 (or 3610908496 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 40.

Adding to 404421750544 its reverse (445057124404), we get a palindrome (849478874948).

The spelling of 404421750544 in words is "four hundred four billion, four hundred twenty-one million, seven hundred fifty thousand, five hundred forty-four".