505105111063 has 4 divisors (see below), whose sum is σ = 577262984080. Its totient is φ = 432947238048.

The previous prime is 505105111061. The next prime is 505105111087. The reversal of 505105111063 is 360111501505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505105111063 - 2¹ = 505105111061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505105111061) 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, 36078936498 + ... + 36078936511.

It is an arithmetic number, because the mean of its divisors is an integer number (144315746020).

Almost surely, 2^505105111063 is an apocalyptic number.

505105111063 is a deficient number, since it is larger than the sum of its proper divisors (72157873017).

505105111063 is an equidigital number, since it uses as much as digits as its factorization.

505105111063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72157873016.

The product of its (nonzero) digits is 2250, while the sum is 28.

Adding to 505105111063 its reverse (360111501505), we get a palindrome (865216612568).

The spelling of 505105111063 in words is "five hundred five billion, one hundred five million, one hundred eleven thousand, sixty-three".