11561333061 has 8 divisors (see below), whose sum is σ = 15469582240. Its totient is φ = 7680319632.

The previous prime is 11561333051. The next prime is 11561333071. The reversal of 11561333061 is 16033316511.

11561333061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11561333051) and next prime (11561333071).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11561333061 - 2⁵ = 11561333029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561333051) 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 in 7 ways as a sum of consecutive naturals, for example, 6807946 + ... + 6809643.

It is an arithmetic number, because the mean of its divisors is an integer number (1933697780).

Almost surely, 2^11561333061 is an apocalyptic number.

It is an amenable number.

11561333061 is a deficient number, since it is larger than the sum of its proper divisors (3908249179).

11561333061 is a wasteful number, since it uses less digits than its factorization.

11561333061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13617875.

The product of its (nonzero) digits is 4860, while the sum is 30.

Adding to 11561333061 its reverse (16033316511), we get a palindrome (27594649572).

The spelling of 11561333061 in words is "eleven billion, five hundred sixty-one million, three hundred thirty-three thousand, sixty-one".