505056001013 has 4 divisors (see below), whose sum is σ = 512169465888. Its totient is φ = 497942536140.

The previous prime is 505056001001. The next prime is 505056001019. The reversal of 505056001013 is 310100650505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 505056001013 - 2¹⁰ = 505055999989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505056001019) 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, 3556732331 + ... + 3556732472.

It is an arithmetic number, because the mean of its divisors is an integer number (128042366472).

Almost surely, 2^505056001013 is an apocalyptic number.

It is an amenable number.

505056001013 is a deficient number, since it is larger than the sum of its proper divisors (7113464875).

505056001013 is an equidigital number, since it uses as much as digits as its factorization.

505056001013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7113464874.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 505056001013 its reverse (310100650505), we get a palindrome (815156651518).

The spelling of 505056001013 in words is "five hundred five billion, fifty-six million, one thousand, thirteen".