11661775113 has 8 divisors (see below), whose sum is σ = 15550723008. Its totient is φ = 7773671984.

The previous prime is 11661775093. The next prime is 11661775159. The reversal of 11661775113 is 31157716611.

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

It is a cyclic number.

It is not a de Polignac number, because 11661775113 - 2⁶ = 11661775049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11661775613) 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, 178245 + ... + 234722.

It is an arithmetic number, because the mean of its divisors is an integer number (1943840376).

Almost surely, 2^11661775113 is an apocalyptic number.

It is an amenable number.

11661775113 is a deficient number, since it is larger than the sum of its proper divisors (3888947895).

11661775113 is an equidigital number, since it uses as much as digits as its factorization.

11661775113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422383.

The product of its digits is 26460, while the sum is 39.

The spelling of 11661775113 in words is "eleven billion, six hundred sixty-one million, seven hundred seventy-five thousand, one hundred thirteen".