50561816359 has 2 divisors, whose sum is σ = 50561816360. Its totient is φ = 50561816358.

The previous prime is 50561816309. The next prime is 50561816411. The reversal of 50561816359 is 95361816505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50561816359 - 2¹⁷ = 50561685287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50561816309) 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 as a sum of consecutive naturals, namely, 25280908179 + 25280908180.

It is an arithmetic number, because the mean of its divisors is an integer number (25280908180).

Almost surely, 2^50561816359 is an apocalyptic number.

50561816359 is a deficient number, since it is larger than the sum of its proper divisors (1).

50561816359 is an equidigital number, since it uses as much as digits as its factorization.

50561816359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 50561816359 in words is "fifty billion, five hundred sixty-one million, eight hundred sixteen thousand, three hundred fifty-nine".