11554166444111 has 2 divisors, whose sum is σ = 11554166444112. Its totient is φ = 11554166444110.

The previous prime is 11554166444089. The next prime is 11554166444113. The reversal of 11554166444111 is 11144466145511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11554166444111 - 2²² = 11554162249807 is a prime.

Together with 11554166444113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11554166444113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777083222055 + 5777083222056.

It is an arithmetic number, because the mean of its divisors is an integer number (5777083222056).

Almost surely, 2^{11554166444111} is an apocalyptic number.

11554166444111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554166444111 is an equidigital number, since it uses as much as digits as its factorization.

11554166444111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 44.

The spelling of 11554166444111 in words is "eleven trillion, five hundred fifty-four billion, one hundred sixty-six million, four hundred forty-four thousand, one hundred eleven".