505216507220 has 24 divisors (see below), whose sum is σ = 1064703633504. Its totient is φ = 201372513696.

The previous prime is 505216507217. The next prime is 505216507267. The reversal of 505216507220 is 22705612505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44624774 + ... + 44636093.

It is an arithmetic number, because the mean of its divisors is an integer number (44362651396).

Almost surely, 2^505216507220 is an apocalyptic number.

It is an amenable number.

505216507220 is an abundant number, since it is smaller than the sum of its proper divisors (559487126284).

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

505216507220 is a wasteful number, since it uses less digits than its factorization.

505216507220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89261159 (or 89261157 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 505216507220 in words is "five hundred five billion, two hundred sixteen million, five hundred seven thousand, two hundred twenty".