50634780221 has 2 divisors, whose sum is σ = 50634780222. Its totient is φ = 50634780220.

The previous prime is 50634780197. The next prime is 50634780223. The reversal of 50634780221 is 12208743605.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50144644900 + 490135321 = 223930^2 + 22139^2 .

It is a cyclic number.

It is not a de Polignac number, because 50634780221 - 2³⁴ = 33454911037 is a prime.

It is a Sophie Germain prime.

Together with 50634780223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50634780223) 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, 25317390110 + 25317390111.

It is an arithmetic number, because the mean of its divisors is an integer number (25317390111).

Almost surely, 2^50634780221 is an apocalyptic number.

It is an amenable number.

50634780221 is a deficient number, since it is larger than the sum of its proper divisors (1).

50634780221 is an equidigital number, since it uses as much as digits as its factorization.

50634780221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 50634780221 in words is "fifty billion, six hundred thirty-four million, seven hundred eighty thousand, two hundred twenty-one".