505053518020 has 24 divisors (see below), whose sum is σ = 1060629255000. Its totient is φ = 202018194432.

The previous prime is 505053518017. The next prime is 505053518063. The reversal of 505053518020 is 20815350505.

It can be written as a sum of positive squares in 4 ways, for example, as 10386055744 + 494667462276 = 101912^2 + 703326^2 .

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, 1399206 + ... + 1722754.

It is an arithmetic number, because the mean of its divisors is an integer number (44192885625).

Almost surely, 2^505053518020 is an apocalyptic number.

It is an amenable number.

505053518020 is an abundant number, since it is smaller than the sum of its proper divisors (555575736980).

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

505053518020 is a wasteful number, since it uses less digits than its factorization.

505053518020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401607 (or 401605 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 34.

Adding to 505053518020 its reverse (20815350505), we get a palindrome (525868868525).

The spelling of 505053518020 in words is "five hundred five billion, fifty-three million, five hundred eighteen thousand, twenty".