503443653053 has 4 divisors (see below), whose sum is σ = 549211257888. Its totient is φ = 457676048220.

The previous prime is 503443653019. The next prime is 503443653113. The reversal of 503443653053 is 350356344305.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 503443653053 - 2¹⁰ = 503443652029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 503443653053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503443653253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22883802401 + ... + 22883802422.

It is an arithmetic number, because the mean of its divisors is an integer number (137302814472).

Almost surely, 2^503443653053 is an apocalyptic number.

It is an amenable number.

503443653053 is a deficient number, since it is larger than the sum of its proper divisors (45767604835).

503443653053 is a wasteful number, since it uses less digits than its factorization.

503443653053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45767604834.

The product of its (nonzero) digits is 972000, while the sum is 41.

Adding to 503443653053 its reverse (350356344305), we get a palindrome (853799997358).

The spelling of 503443653053 in words is "five hundred three billion, four hundred forty-three million, six hundred fifty-three thousand, fifty-three".