50021197807717 has 2 divisors, whose sum is σ = 50021197807718. Its totient is φ = 50021197807716.

The previous prime is 50021197807687. The next prime is 50021197807729. The reversal of 50021197807717 is 71770879112005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41277875145796 + 8743322661921 = 6424786^2 + 2956911^2 .

It is a cyclic number.

It is not a de Polignac number, because 50021197807717 - 2⁷ = 50021197807589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50021197807517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010598903858 + 25010598903859.

It is an arithmetic number, because the mean of its divisors is an integer number (25010598903859).

Almost surely, 2^{50021197807717} is an apocalyptic number.

It is an amenable number.

50021197807717 is a deficient number, since it is larger than the sum of its proper divisors (1).

50021197807717 is an equidigital number, since it uses as much as digits as its factorization.

50021197807717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728720, while the sum is 55.

The spelling of 50021197807717 in words is "fifty trillion, twenty-one billion, one hundred ninety-seven million, eight hundred seven thousand, seven hundred seventeen".