10561170561 has 4 divisors (see below), whose sum is σ = 14081560752. Its totient is φ = 7040780372.

The previous prime is 10561170553. The next prime is 10561170619. The reversal of 10561170561 is 16507116501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10561170561 - 2³ = 10561170553 is a prime.

It is a super-2 number, since 2×10561170561² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10561170161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760195091 + ... + 1760195096.

It is an arithmetic number, because the mean of its divisors is an integer number (3520390188).

Almost surely, 2^10561170561 is an apocalyptic number.

It is an amenable number.

10561170561 is a deficient number, since it is larger than the sum of its proper divisors (3520390191).

10561170561 is an equidigital number, since it uses as much as digits as its factorization.

10561170561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520390190.

The product of its (nonzero) digits is 6300, while the sum is 33.

The spelling of 10561170561 in words is "ten billion, five hundred sixty-one million, one hundred seventy thousand, five hundred sixty-one".