50221317169 has 2 divisors, whose sum is σ = 50221317170. Its totient is φ = 50221317168.

The previous prime is 50221317151. The next prime is 50221317191. The reversal of 50221317169 is 96171312205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49245379569 + 975937600 = 221913^2 + 31240^2 .

It is a cyclic number.

It is not a de Polignac number, because 50221317169 - 2⁵ = 50221317137 is a prime.

It is a super-2 number, since 2×50221317169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50221357169) 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, 25110658584 + 25110658585.

It is an arithmetic number, because the mean of its divisors is an integer number (25110658585).

Almost surely, 2^50221317169 is an apocalyptic number.

It is an amenable number.

50221317169 is a deficient number, since it is larger than the sum of its proper divisors (1).

50221317169 is an equidigital number, since it uses as much as digits as its factorization.

50221317169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 50221317169 in words is "fifty billion, two hundred twenty-one million, three hundred seventeen thousand, one hundred sixty-nine".