50438404717 has 2 divisors, whose sum is σ = 50438404718. Its totient is φ = 50438404716.

The previous prime is 50438404661. The next prime is 50438404721. The reversal of 50438404717 is 71740483405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50184512361 + 253892356 = 224019^2 + 15934^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50438404717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50438404787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25219202358 + 25219202359.

It is an arithmetic number, because the mean of its divisors is an integer number (25219202359).

Almost surely, 2^50438404717 is an apocalyptic number.

It is an amenable number.

50438404717 is a deficient number, since it is larger than the sum of its proper divisors (1).

50438404717 is an equidigital number, since it uses as much as digits as its factorization.

50438404717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 43.

The spelling of 50438404717 in words is "fifty billion, four hundred thirty-eight million, four hundred four thousand, seven hundred seventeen".