505544152220 has 12 divisors (see below), whose sum is σ = 1061642719704. Its totient is φ = 202217660880.

The previous prime is 505544152189. The next prime is 505544152231. The reversal of 505544152220 is 22251445505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12638603786 + ... + 12638603825.

It is an arithmetic number, because the mean of its divisors is an integer number (88470226642).

Almost surely, 2^505544152220 is an apocalyptic number.

It is an amenable number.

505544152220 is an abundant number, since it is smaller than the sum of its proper divisors (556098567484).

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

505544152220 is a wasteful number, since it uses less digits than its factorization.

505544152220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25277207620 (or 25277207618 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 35.

Adding to 505544152220 its reverse (22251445505), we get a palindrome (527795597725).

The spelling of 505544152220 in words is "five hundred five billion, five hundred forty-four million, one hundred fifty-two thousand, two hundred twenty".