10561161161161 has 8 divisors (see below), whose sum is σ = 11455382335040. Its totient is φ = 9678629153232.

The previous prime is 10561161161137. The next prime is 10561161161167. The reversal of 10561161161161 is 16116116116501.

10561161161161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10561161161161 - 2⁵ = 10561161161129 is a prime.

It is a super-2 number, since 2×10561161161161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10561161161161.

It is not an unprimeable number, because it can be changed into a prime (10561161161167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2922289605 + ... + 2922293218.

It is an arithmetic number, because the mean of its divisors is an integer number (1431922791880).

Almost surely, 2^{10561161161161} is an apocalyptic number.

It is an amenable number.

10561161161161 is a deficient number, since it is larger than the sum of its proper divisors (894221173879).

10561161161161 is a wasteful number, since it uses less digits than its factorization.

10561161161161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844582975.

The product of its (nonzero) digits is 6480, while the sum is 37.

Adding to 10561161161161 its reverse (16116116116501), we get a palindrome (26677277277662).

The spelling of 10561161161161 in words is "ten trillion, five hundred sixty-one billion, one hundred sixty-one million, one hundred sixty-one thousand, one hundred sixty-one".