503042556444 has 24 divisors (see below), whose sum is σ = 1176312108048. Its totient is φ = 167317117440.

The previous prime is 503042556433. The next prime is 503042556449. The reversal of 503042556444 is 444655240305.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 503042556396 and 503042556405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503042556449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45461077 + ... + 45472140.

It is an arithmetic number, because the mean of its divisors is an integer number (49013004502).

Almost surely, 2^503042556444 is an apocalyptic number.

It is an amenable number.

503042556444 is an abundant number, since it is smaller than the sum of its proper divisors (673269551604).

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

503042556444 is a wasteful number, since it uses less digits than its factorization.

503042556444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90933685 (or 90933683 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

Adding to 503042556444 its reverse (444655240305), we get a palindrome (947697796749).

The spelling of 503042556444 in words is "five hundred three billion, forty-two million, five hundred fifty-six thousand, four hundred forty-four".