503533234353421 has 4 divisors (see below), whose sum is σ = 503559734726844. Its totient is φ = 503506733980000.

The previous prime is 503533234353349. The next prime is 503533234353433. The reversal of 503533234353421 is 124353432335305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 266261263140196 + 237271971213225 = 16317514^2 + 15403635^2 .

It is a cyclic number.

It is not a de Polignac number, because 503533234353421 - 2¹⁷ = 503533234222349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503533234153421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13250158210 + ... + 13250196211.

It is an arithmetic number, because the mean of its divisors is an integer number (125889933681711).

Almost surely, 2^{503533234353421} is an apocalyptic number.

It is an amenable number.

503533234353421 is a deficient number, since it is larger than the sum of its proper divisors (26500373423).

503533234353421 is a wasteful number, since it uses less digits than its factorization.

503533234353421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26500373422.

The product of its (nonzero) digits is 5832000, while the sum is 46.

Adding to 503533234353421 its reverse (124353432335305), we get a palindrome (627886666688726).

The spelling of 503533234353421 in words is "five hundred three trillion, five hundred thirty-three billion, two hundred thirty-four million, three hundred fifty-three thousand, four hundred twenty-one".