505851300220 has 48 divisors (see below), whose sum is σ = 1214083620288. Its totient is φ = 173428945920.

The previous prime is 505851300169. The next prime is 505851300221. The reversal of 505851300220 is 22003158505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505851300221) 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, 7796634 + ... + 7861246.

It is an arithmetic number, because the mean of its divisors is an integer number (25293408756).

Almost surely, 2^505851300220 is an apocalyptic number.

It is an amenable number.

505851300220 is an abundant number, since it is smaller than the sum of its proper divisors (708232320068).

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

505851300220 is a wasteful number, since it uses less digits than its factorization.

505851300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120550 (or 120548 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 505851300220 its reverse (22003158505), we get a palindrome (527854458725).

The spelling of 505851300220 in words is "five hundred five billion, eight hundred fifty-one million, three hundred thousand, two hundred twenty".