50201010661 has 2 divisors, whose sum is σ = 50201010662. Its totient is φ = 50201010660.

The previous prime is 50201010647. The next prime is 50201010703. The reversal of 50201010661 is 16601010205.

50201010661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48270726436 + 1930284225 = 219706^2 + 43935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50201010661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50201010631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25100505330 + 25100505331.

It is an arithmetic number, because the mean of its divisors is an integer number (25100505331).

Almost surely, 2^50201010661 is an apocalyptic number.

It is an amenable number.

50201010661 is a deficient number, since it is larger than the sum of its proper divisors (1).

50201010661 is an equidigital number, since it uses as much as digits as its factorization.

50201010661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 50201010661 its reverse (16601010205), we get a palindrome (66802020866).

The spelling of 50201010661 in words is "fifty billion, two hundred one million, ten thousand, six hundred sixty-one".