50161776565997 has 2 divisors, whose sum is σ = 50161776565998. Its totient is φ = 50161776565996.

The previous prime is 50161776565993. The next prime is 50161776566051. The reversal of 50161776565997 is 79956567716105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25847350872841 + 24314425693156 = 5084029^2 + 4930966^2 .

It is a cyclic number.

It is not a de Polignac number, because 50161776565997 - 2² = 50161776565993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50161776565993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25080888282998 + 25080888282999.

It is an arithmetic number, because the mean of its divisors is an integer number (25080888282999).

Almost surely, 2^{50161776565997} is an apocalyptic number.

It is an amenable number.

50161776565997 is a deficient number, since it is larger than the sum of its proper divisors (1).

50161776565997 is an equidigital number, since it uses as much as digits as its factorization.

50161776565997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 750141000, while the sum is 74.

The spelling of 50161776565997 in words is "fifty trillion, one hundred sixty-one billion, seven hundred seventy-six million, five hundred sixty-five thousand, nine hundred ninety-seven".