50809537511 has 4 divisors (see below), whose sum is σ = 51075556224. Its totient is φ = 50543518800.

The previous prime is 50809537463. The next prime is 50809537561. The reversal of 50809537511 is 11573590805.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50809537511 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 (50809537561) 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, 133009070 + ... + 133009451.

It is an arithmetic number, because the mean of its divisors is an integer number (12768889056).

Almost surely, 2^50809537511 is an apocalyptic number.

50809537511 is a deficient number, since it is larger than the sum of its proper divisors (266018713).

50809537511 is a wasteful number, since it uses less digits than its factorization.

50809537511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266018712.

The product of its (nonzero) digits is 189000, while the sum is 44.

The spelling of 50809537511 in words is "fifty billion, eight hundred nine million, five hundred thirty-seven thousand, five hundred eleven".