503440423044 has 192 divisors, whose sum is σ = 1356628331520. Its totient is φ = 143933644800.

The previous prime is 503440423039. The next prime is 503440423067. The reversal of 503440423044 is 440324044305.

It is a junction number, because it is equal to n+sod(n) for n = 503440422996 and 503440423014.

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 63 ways as a sum of consecutive naturals, for example, 99906277 + ... + 99911315.

It is an arithmetic number, because the mean of its divisors is an integer number (7065772560).

Almost surely, 2^503440423044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503440423044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678314165760).

503440423044 is an abundant number, since it is smaller than the sum of its proper divisors (853187908476).

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

503440423044 is a wasteful number, since it uses less digits than its factorization.

503440423044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 503440423044 its reverse (440324044305), we get a palindrome (943764467349).

The spelling of 503440423044 in words is "five hundred three billion, four hundred forty million, four hundred twenty-three thousand, forty-four".