9561013361 has 2 divisors, whose sum is σ = 9561013362. Its totient is φ = 9561013360.

The previous prime is 9561013349. The next prime is 9561013421. The reversal of 9561013361 is 1633101659.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5723830336 + 3837183025 = 75656^2 + 61945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9561013361 is a prime.

It is not a weakly prime, because it can be changed into another prime (9561013261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4780506680 + 4780506681.

It is an arithmetic number, because the mean of its divisors is an integer number (4780506681).

Almost surely, 2^9561013361 is an apocalyptic number.

It is an amenable number.

9561013361 is a deficient number, since it is larger than the sum of its proper divisors (1).

9561013361 is an equidigital number, since it uses as much as digits as its factorization.

9561013361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 9561013361 is about 97780.4344488201. The cubic root of 9561013361 is about 2122.4361872470.

The spelling of 9561013361 in words is "nine billion, five hundred sixty-one million, thirteen thousand, three hundred sixty-one".