50616705509 has 2 divisors, whose sum is σ = 50616705510. Its totient is φ = 50616705508.

The previous prime is 50616705421. The next prime is 50616705533. The reversal of 50616705509 is 90550761605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43224489025 + 7392216484 = 207905^2 + 85978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50616705509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50616705509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50616705569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25308352754 + 25308352755.

It is an arithmetic number, because the mean of its divisors is an integer number (25308352755).

Almost surely, 2^50616705509 is an apocalyptic number.

It is an amenable number.

50616705509 is a deficient number, since it is larger than the sum of its proper divisors (1).

50616705509 is an equidigital number, since it uses as much as digits as its factorization.

50616705509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 283500, while the sum is 44.

The spelling of 50616705509 in words is "fifty billion, six hundred sixteen million, seven hundred five thousand, five hundred nine".