505304163043 has 4 divisors (see below), whose sum is σ = 505475281528. Its totient is φ = 505133044560.

The previous prime is 505304162927. The next prime is 505304163047. The reversal of 505304163043 is 340361403505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340361403505 = 5 ⋅68072280701.

It is a cyclic number.

It is not a de Polignac number, because 505304163043 - 2¹⁷ = 505304031971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505304163047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85554813 + ... + 85560718.

It is an arithmetic number, because the mean of its divisors is an integer number (126368820382).

Almost surely, 2^505304163043 is an apocalyptic number.

505304163043 is a deficient number, since it is larger than the sum of its proper divisors (171118485).

505304163043 is a wasteful number, since it uses less digits than its factorization.

505304163043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171118484.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 505304163043 its reverse (340361403505), we get a palindrome (845665566548).

The spelling of 505304163043 in words is "five hundred five billion, three hundred four million, one hundred sixty-three thousand, forty-three".