10561105005611 has 4 divisors (see below), whose sum is σ = 10601261298672. Its totient is φ = 10520948712552.

The previous prime is 10561105005551. The next prime is 10561105005613. The reversal of 10561105005611 is 11650050116501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10561105005611 - 2³⁰ = 10560031263787 is a prime.

It is a super-2 number, since 2×10561105005611² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10561105005613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20078146136 + ... + 20078146661.

It is an arithmetic number, because the mean of its divisors is an integer number (2650315324668).

Almost surely, 2^{10561105005611} is an apocalyptic number.

10561105005611 is a deficient number, since it is larger than the sum of its proper divisors (40156293061).

10561105005611 is an equidigital number, since it uses as much as digits as its factorization.

10561105005611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40156293060.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 10561105005611 in words is "ten trillion, five hundred sixty-one billion, one hundred five million, five thousand, six hundred eleven".