503421445444 has 24 divisors (see below), whose sum is σ = 904919494808. Its totient is φ = 244874845440.

The previous prime is 503421445427. The next prime is 503421445453. The reversal of 503421445444 is 444544124305.

It can be written as a sum of positive squares in 4 ways, for example, as 473123865600 + 30297579844 = 687840^2 + 174062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 503421445397 and 503421445406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896224 + ... + 1345384.

Almost surely, 2^503421445444 is an apocalyptic number.

It is an amenable number.

503421445444 is a deficient number, since it is larger than the sum of its proper divisors (401498049364).

503421445444 is a wasteful number, since it uses less digits than its factorization.

503421445444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456775 (or 456773 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 503421445444 its reverse (444544124305), we get a palindrome (947965569749).

The spelling of 503421445444 in words is "five hundred three billion, four hundred twenty-one million, four hundred forty-five thousand, four hundred forty-four".