11644111199 has 8 divisors (see below), whose sum is σ = 13308230688. Its totient is φ = 9980160480.

The previous prime is 11644111187. The next prime is 11644111217. The reversal of 11644111199 is 99111144611.

It is a happy number.

11644111199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11644111199 - 2¹² = 11644107103 is a prime.

It is a super-2 number, since 2×11644111199² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644111109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193289 + ... + 246269.

It is an arithmetic number, because the mean of its divisors is an integer number (1663528836).

Almost surely, 2^11644111199 is an apocalyptic number.

11644111199 is a deficient number, since it is larger than the sum of its proper divisors (1664119489).

11644111199 is an equidigital number, since it uses as much as digits as its factorization.

11644111199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84385.

The product of its digits is 7776, while the sum is 38.

The spelling of 11644111199 in words is "eleven billion, six hundred forty-four million, one hundred eleven thousand, one hundred ninety-nine".