50506111111 has 4 divisors (see below), whose sum is σ = 50506845400. Its totient is φ = 50505376824.

The previous prime is 50506111109. The next prime is 50506111127. The reversal of 50506111111 is 11111160505.

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 50506111111 - 2¹ = 50506111109 is a prime.

It is a Duffinian number.

50506111111 is a modest number, since divided by 111111 gives 50506 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50506111151) 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, 251916 + ... + 405553.

It is an arithmetic number, because the mean of its divisors is an integer number (12626711350).

Almost surely, 2^50506111111 is an apocalyptic number.

50506111111 is a deficient number, since it is larger than the sum of its proper divisors (734289).

50506111111 is an equidigital number, since it uses as much as digits as its factorization.

50506111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734288.

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

Adding to 50506111111 its reverse (11111160505), we get a palindrome (61617271616).

The spelling of 50506111111 in words is "fifty billion, five hundred six million, one hundred eleven thousand, one hundred eleven".