506366502237221 has 16 divisors (see below), whose sum is σ = 529065383235840. Its totient is φ = 484017762580800.

The previous prime is 506366502237119. The next prime is 506366502237223. The reversal of 506366502237221 is 122732205663605.

It is a de Polignac number, because none of the positive numbers 2^k-506366502237221 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 506366502237221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506366502237223) 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, 21652820 + ... + 38491266.

It is an arithmetic number, because the mean of its divisors is an integer number (33066586452240).

Almost surely, 2^{506366502237221} is an apocalyptic number.

It is an amenable number.

506366502237221 is a deficient number, since it is larger than the sum of its proper divisors (22698880998619).

506366502237221 is a wasteful number, since it uses less digits than its factorization.

506366502237221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16848844.

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 506366502237221 in words is "five hundred six trillion, three hundred sixty-six billion, five hundred two million, two hundred thirty-seven thousand, two hundred twenty-one".