506321033534503 has 16 divisors (see below), whose sum is σ = 576370646735616. Its totient is φ = 440275186267840.

The previous prime is 506321033534431. The next prime is 506321033534599. The reversal of 506321033534503 is 305435330123605.

It is a de Polignac number, because none of the positive numbers 2^k-506321033534503 is a prime.

It is a super-2 number, since 2×506321033534503² (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 506321033534503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506321033538503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19234200 + ... + 37183282.

It is an arithmetic number, because the mean of its divisors is an integer number (36023165420976).

Almost surely, 2^{506321033534503} is an apocalyptic number.

506321033534503 is a deficient number, since it is larger than the sum of its proper divisors (70049613201113).

506321033534503 is a wasteful number, since it uses less digits than its factorization.

506321033534503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18060614.

The product of its (nonzero) digits is 1458000, while the sum is 43.

The spelling of 506321033534503 in words is "five hundred six trillion, three hundred twenty-one billion, thirty-three million, five hundred thirty-four thousand, five hundred three".