503025435342403 has 4 divisors (see below), whose sum is σ = 505578863948400. Its totient is φ = 500472006736408.

The previous prime is 503025435342361. The next prime is 503025435342499. The reversal of 503025435342403 is 304243534520305.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503025435342403 is a prime.

It is a super-2 number, since 2×503025435342403² (a number of 30 digits) contains 22 as substring.

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 503025435342403.

It is not an unprimeable number, because it can be changed into a prime (503025435346403) 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, 1276714302703 + ... + 1276714303096.

It is an arithmetic number, because the mean of its divisors is an integer number (126394715987100).

Almost surely, 2^{503025435342403} is an apocalyptic number.

503025435342403 is a deficient number, since it is larger than the sum of its proper divisors (2553428605997).

503025435342403 is a wasteful number, since it uses less digits than its factorization.

503025435342403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553428605996.

The product of its (nonzero) digits is 2592000, while the sum is 43.

Adding to 503025435342403 its reverse (304243534520305), we get a palindrome (807268969862708).

The spelling of 503025435342403 in words is "five hundred three trillion, twenty-five billion, four hundred thirty-five million, three hundred forty-two thousand, four hundred three".