11610106561 has 4 divisors (see below), whose sum is σ = 11612091312. Its totient is φ = 11608121812.

The previous prime is 11610106549. The next prime is 11610106601. The reversal of 11610106561 is 16560101611.

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 11610106561 - 2⁷ = 11610106433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11610106061) 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, 983575 + ... + 995308.

It is an arithmetic number, because the mean of its divisors is an integer number (2903022828).

Almost surely, 2^11610106561 is an apocalyptic number.

It is an amenable number.

11610106561 is a deficient number, since it is larger than the sum of its proper divisors (1984751).

11610106561 is an equidigital number, since it uses as much as digits as its factorization.

11610106561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984750.

The product of its (nonzero) digits is 1080, while the sum is 28.

The spelling of 11610106561 in words is "eleven billion, six hundred ten million, one hundred six thousand, five hundred sixty-one".