10561789681 has 16 divisors (see below), whose sum is σ = 11079005184. Its totient is φ = 10049554944.

The previous prime is 10561789669. The next prime is 10561789697. The reversal of 10561789681 is 18698716501.

10561789681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10561789681 - 2⁹ = 10561789169 is a prime.

It is a super-4 number, since 4×10561789681⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10561789661) 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 15 ways as a sum of consecutive naturals, for example, 4368585 + ... + 4371001.

It is an arithmetic number, because the mean of its divisors is an integer number (692437824).

Almost surely, 2^10561789681 is an apocalyptic number.

It is an amenable number.

10561789681 is a deficient number, since it is larger than the sum of its proper divisors (517215503).

10561789681 is a wasteful number, since it uses less digits than its factorization.

10561789681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 10561789681 in words is "ten billion, five hundred sixty-one million, seven hundred eighty-nine thousand, six hundred eighty-one".