11663443341331 has 4 divisors (see below), whose sum is σ = 11663450205064. Its totient is φ = 11663436477600.

The previous prime is 11663443341311. The next prime is 11663443341349. The reversal of 11663443341331 is 13314334436611.

11663443341331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11663443341331 - 2²³ = 11663434952723 is a prime.

It is a super-2 number, since 2×11663443341331² (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 (11663443341301) 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, 1208896 + ... + 4978786.

It is an arithmetic number, because the mean of its divisors is an integer number (2915862551266).

Almost surely, 2^{11663443341331} is an apocalyptic number.

11663443341331 is a deficient number, since it is larger than the sum of its proper divisors (6863733).

11663443341331 is an equidigital number, since it uses as much as digits as its factorization.

11663443341331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863732.

The product of its digits is 559872, while the sum is 43.

Adding to 11663443341331 its reverse (13314334436611), we get a palindrome (24977777777942).

The spelling of 11663443341331 in words is "eleven trillion, six hundred sixty-three billion, four hundred forty-three million, three hundred forty-one thousand, three hundred thirty-one".