50689290161 has 2 divisors, whose sum is σ = 50689290162. Its totient is φ = 50689290160.

The previous prime is 50689290139. The next prime is 50689290199. The reversal of 50689290161 is 16109298605.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31598617600 + 19090672561 = 177760^2 + 138169^2 .

It is a cyclic number.

It is not a de Polignac number, because 50689290161 - 2¹⁴ = 50689273777 is a prime.

It is not a weakly prime, because it can be changed into another prime (50689290361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25344645080 + 25344645081.

It is an arithmetic number, because the mean of its divisors is an integer number (25344645081).

Almost surely, 2^50689290161 is an apocalyptic number.

It is an amenable number.

50689290161 is a deficient number, since it is larger than the sum of its proper divisors (1).

50689290161 is an equidigital number, since it uses as much as digits as its factorization.

50689290161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 50689290161 in words is "fifty billion, six hundred eighty-nine million, two hundred ninety thousand, one hundred sixty-one".