10561111071 has 12 divisors (see below), whose sum is σ = 16380499032. Its totient is φ = 6034920528.

The previous prime is 10561111039. The next prime is 10561111087. The reversal of 10561111071 is 17011116501.

It is not a de Polignac number, because 10561111071 - 2⁵ = 10561111039 is a prime.

It is a super-2 number, since 2×10561111071² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561119071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35922000 + ... + 35922293.

It is an arithmetic number, because the mean of its divisors is an integer number (1365041586).

Almost surely, 2^10561111071 is an apocalyptic number.

10561111071 is a deficient number, since it is larger than the sum of its proper divisors (5819387961).

10561111071 is an equidigital number, since it uses as much as digits as its factorization.

10561111071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71844310 (or 71844303 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 24.

Adding to 10561111071 its reverse (17011116501), we get a palindrome (27572227572).

The spelling of 10561111071 in words is "ten billion, five hundred sixty-one million, one hundred eleven thousand, seventy-one".