503145223203 has 64 divisors (see below), whose sum is σ = 821295820800. Its totient is φ = 267607774080.

The previous prime is 503145223181. The next prime is 503145223213. The reversal of 503145223203 is 302322541305.

It is not a de Polignac number, because 503145223203 - 2⁵ = 503145223171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503145223213) 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 63 ways as a sum of consecutive naturals, for example, 5952208 + ... + 6036146.

It is an arithmetic number, because the mean of its divisors is an integer number (12832747200).

Almost surely, 2^503145223203 is an apocalyptic number.

503145223203 is a deficient number, since it is larger than the sum of its proper divisors (318150597597).

503145223203 is a wasteful number, since it uses less digits than its factorization.

503145223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84232.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 503145223203 its reverse (302322541305), we get a palindrome (805467764508).

The spelling of 503145223203 in words is "five hundred three billion, one hundred forty-five million, two hundred twenty-three thousand, two hundred three".