50020485661 has 2 divisors, whose sum is σ = 50020485662. Its totient is φ = 50020485660.

The previous prime is 50020485607. The next prime is 50020485667. The reversal of 50020485661 is 16658402005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32015944900 + 18004540761 = 178930^2 + 134181^2 .

It is a cyclic number.

It is not a de Polignac number, because 50020485661 - 2¹³ = 50020477469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50020485661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50020485667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25010242830 + 25010242831.

It is an arithmetic number, because the mean of its divisors is an integer number (25010242831).

Almost surely, 2^50020485661 is an apocalyptic number.

It is an amenable number.

50020485661 is a deficient number, since it is larger than the sum of its proper divisors (1).

50020485661 is an equidigital number, since it uses as much as digits as its factorization.

50020485661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

Adding to 50020485661 its reverse (16658402005), we get a palindrome (66678887666).

The spelling of 50020485661 in words is "fifty billion, twenty million, four hundred eighty-five thousand, six hundred sixty-one".