50505561611 has 4 divisors (see below), whose sum is σ = 50722323912. Its totient is φ = 50288799312.

The previous prime is 50505561559. The next prime is 50505561619. The reversal of 50505561611 is 11616550505.

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 50505561611 - 2¹⁴ = 50505545227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50505561619) 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, 108380801 + ... + 108381266.

It is an arithmetic number, because the mean of its divisors is an integer number (12680580978).

Almost surely, 2^50505561611 is an apocalyptic number.

50505561611 is a deficient number, since it is larger than the sum of its proper divisors (216762301).

50505561611 is a wasteful number, since it uses less digits than its factorization.

50505561611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216762300.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 50505561611 in words is "fifty billion, five hundred five million, five hundred sixty-one thousand, six hundred eleven".