506320226566221 has 16 divisors (see below), whose sum is σ = 675526130012160. Its totient is φ = 337330573554480.

The previous prime is 506320226566201. The next prime is 506320226566229. The reversal of 506320226566221 is 122665622023605.

It is not a de Polignac number, because 506320226566221 - 2¹⁸ = 506320226304077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506320226566229) 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, 833706886 + ... + 834313976.

It is an arithmetic number, because the mean of its divisors is an integer number (42220383125760).

Almost surely, 2^{506320226566221} is an apocalyptic number.

It is an amenable number.

506320226566221 is a deficient number, since it is larger than the sum of its proper divisors (169205903445939).

506320226566221 is a wasteful number, since it uses less digits than its factorization.

506320226566221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784736.

The product of its (nonzero) digits is 3110400, while the sum is 48.

Adding to 506320226566221 its reverse (122665622023605), we get a palindrome (628985848589826).

The spelling of 506320226566221 in words is "five hundred six trillion, three hundred twenty billion, two hundred twenty-six million, five hundred sixty-six thousand, two hundred twenty-one".