11795761561 has 2 divisors, whose sum is σ = 11795761562. Its totient is φ = 11795761560.

The previous prime is 11795761543. The next prime is 11795761603. The reversal of 11795761561 is 16516759711.

11795761561 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., 7877627536 + 3918134025 = 88756^2 + 62595^2 .

It is a cyclic number.

It is not a de Polignac number, because 11795761561 - 2²¹ = 11793664409 is a prime.

It is not a weakly prime, because it can be changed into another prime (11795761501) 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, 5897880780 + 5897880781.

It is an arithmetic number, because the mean of its divisors is an integer number (5897880781).

Almost surely, 2^11795761561 is an apocalyptic number.

It is an amenable number.

11795761561 is a deficient number, since it is larger than the sum of its proper divisors (1).

11795761561 is an equidigital number, since it uses as much as digits as its factorization.

11795761561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 396900, while the sum is 49.

The spelling of 11795761561 in words is "eleven billion, seven hundred ninety-five million, seven hundred sixty-one thousand, five hundred sixty-one".