505213645223 has 16 divisors (see below), whose sum is σ = 611766779904. Its totient is φ = 407290101120.

The previous prime is 505213645213. The next prime is 505213645259. The reversal of 505213645223 is 322546312505.

It is not a de Polignac number, because 505213645223 - 2⁶ = 505213645159 is a prime.

It is a super-2 number, since 2×505213645223² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505213645213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268015 + ... + 1618112.

It is an arithmetic number, because the mean of its divisors is an integer number (38235423744).

Almost surely, 2^505213645223 is an apocalyptic number.

505213645223 is a deficient number, since it is larger than the sum of its proper divisors (106553134681).

505213645223 is a wasteful number, since it uses less digits than its factorization.

505213645223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887622.

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 505213645223 its reverse (322546312505), we get a palindrome (827759957728).

The spelling of 505213645223 in words is "five hundred five billion, two hundred thirteen million, six hundred forty-five thousand, two hundred twenty-three".