405320224545444 has 48 divisors (see below), whose sum is σ = 1078408561241088. Its totient is φ = 117377802582528.

The previous prime is 405320224545421. The next prime is 405320224545479. The reversal of 405320224545444 is 444545422023504.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 405320224545393 and 405320224545402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76417837572 + ... + 76417842875.

It is an arithmetic number, because the mean of its divisors is an integer number (22466845025856).

Almost surely, 2^{405320224545444} is an apocalyptic number.

It is an amenable number.

405320224545444 is an abundant number, since it is smaller than the sum of its proper divisors (673088336695644).

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

405320224545444 is a wasteful number, since it uses less digits than its factorization.

405320224545444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152835680484 (or 152835680482 counting only the distinct ones).

The product of its (nonzero) digits is 12288000, while the sum is 48.

Adding to 405320224545444 its reverse (444545422023504), we get a palindrome (849865646568948).

The spelling of 405320224545444 in words is "four hundred five trillion, three hundred twenty billion, two hundred twenty-four million, five hundred forty-five thousand, four hundred forty-four".