505060111111 has 4 divisors (see below), whose sum is σ = 505062379224. Its totient is φ = 505057843000.

The previous prime is 505060111067. The next prime is 505060111123. The reversal of 505060111111 is 111111060505.

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 505060111111 - 2¹⁷ = 505059980039 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 (505060111411) 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, 758605 + ... + 1259206.

It is an arithmetic number, because the mean of its divisors is an integer number (126265594806).

Almost surely, 2^505060111111 is an apocalyptic number.

505060111111 is a deficient number, since it is larger than the sum of its proper divisors (2268113).

505060111111 is a wasteful number, since it uses less digits than its factorization.

505060111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268112.

The product of its (nonzero) digits is 150, while the sum is 22.

Adding to 505060111111 its reverse (111111060505), we get a palindrome (616171171616).

The spelling of 505060111111 in words is "five hundred five billion, sixty million, one hundred eleven thousand, one hundred eleven".