505223454220 has 24 divisors (see below), whose sum is σ = 1107098352864. Its totient is φ = 193302886656.

The previous prime is 505223454191. The next prime is 505223454221. The reversal of 505223454220 is 22454322505.

It is not an unprimeable number, because it can be changed into a prime (505223454221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549155469 + ... + 549156388.

It is an arithmetic number, because the mean of its divisors is an integer number (46129098036).

Almost surely, 2^505223454220 is an apocalyptic number.

It is an amenable number.

505223454220 is an abundant number, since it is smaller than the sum of its proper divisors (601874898644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505223454220 is a wasteful number, since it uses less digits than its factorization.

505223454220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098311889 (or 1098311887 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 505223454220 its reverse (22454322505), we get a palindrome (527677776725).

The spelling of 505223454220 in words is "five hundred five billion, two hundred twenty-three million, four hundred fifty-four thousand, two hundred twenty".