50511100111 has 4 divisors (see below), whose sum is σ = 53482341312. Its totient is φ = 47539858912.

The previous prime is 50511100103. The next prime is 50511100151. The reversal of 50511100111 is 11100111505.

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 50511100111 - 2³ = 50511100103 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 (50511100151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485620575 + ... + 1485620608.

It is an arithmetic number, because the mean of its divisors is an integer number (13370585328).

Almost surely, 2^50511100111 is an apocalyptic number.

50511100111 is a deficient number, since it is larger than the sum of its proper divisors (2971241201).

50511100111 is a wasteful number, since it uses less digits than its factorization.

50511100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971241200.

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 50511100111 its reverse (11100111505), we get a palindrome (61611211616).

The spelling of 50511100111 in words is "fifty billion, five hundred eleven million, one hundred thousand, one hundred eleven".