50990011111 has 4 divisors (see below), whose sum is σ = 54912319672. Its totient is φ = 47067702552.

The previous prime is 50990011027. The next prime is 50990011129. The reversal of 50990011111 is 11111009905.

It is a happy number.

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

It is not a de Polignac number, because 50990011111 - 2¹⁵ = 50989978343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50990011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50990011211) 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, 1961154261 + ... + 1961154286.

It is an arithmetic number, because the mean of its divisors is an integer number (13728079918).

Almost surely, 2^50990011111 is an apocalyptic number.

50990011111 is a deficient number, since it is larger than the sum of its proper divisors (3922308561).

50990011111 is a wasteful number, since it uses less digits than its factorization.

50990011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922308560.

The product of its (nonzero) digits is 405, while the sum is 28.

The spelling of 50990011111 in words is "fifty billion, nine hundred ninety million, eleven thousand, one hundred eleven".