505344504020 has 48 divisors (see below), whose sum is σ = 1062599731200. Its totient is φ = 201875841024.

The previous prime is 505344504017. The next prime is 505344504043. The reversal of 505344504020 is 20405443505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63665492 + ... + 63673428.

It is an arithmetic number, because the mean of its divisors is an integer number (22137494400).

Almost surely, 2^505344504020 is an apocalyptic number.

It is an amenable number.

505344504020 is an abundant number, since it is smaller than the sum of its proper divisors (557255227180).

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

505344504020 is a wasteful number, since it uses less digits than its factorization.

505344504020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672 (or 11670 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 505344504020 its reverse (20405443505), we get a palindrome (525749947525).

It can be divided in two parts, 50534 and 4504020, that added together give a palindrome (4554554).

The spelling of 505344504020 in words is "five hundred five billion, three hundred forty-four million, five hundred four thousand, twenty".