505212043424 has 72 divisors (see below), whose sum is σ = 1122826185684. Its totient is φ = 223435238400.

The previous prime is 505212043423. The next prime is 505212043447. The reversal of 505212043424 is 424340212505.

It can be written as a sum of positive squares in 2 ways, for example, as 360456144400 + 144755899024 = 600380^2 + 380468^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (505212043423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1619957 + ... + 1906484.

Almost surely, 2^505212043424 is an apocalyptic number.

It is an amenable number.

505212043424 is an abundant number, since it is smaller than the sum of its proper divisors (617614142260).

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

505212043424 is a wasteful number, since it uses less digits than its factorization.

505212043424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526510 (or 3526491 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 505212043424 its reverse (424340212505), we get a palindrome (929552255929).

The spelling of 505212043424 in words is "five hundred five billion, two hundred twelve million, forty-three thousand, four hundred twenty-four".