12116664249 has 16 divisors (see below), whose sum is σ = 17367674880. Its totient is φ = 7489806480.

The previous prime is 12116664233. The next prime is 12116664299. The reversal of 12116664249 is 94246661121.

It is not a de Polignac number, because 12116664249 - 2⁴ = 12116664233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12116664249.

It is not an unprimeable number, because it can be changed into a prime (12116664229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2258737 + ... + 2264094.

It is an arithmetic number, because the mean of its divisors is an integer number (1085479680).

Almost surely, 2^12116664249 is an apocalyptic number.

12116664249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12116664249 is a deficient number, since it is larger than the sum of its proper divisors (5251010631).

12116664249 is a wasteful number, since it uses less digits than its factorization.

12116664249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522900.

The product of its digits is 124416, while the sum is 42.

The spelling of 12116664249 in words is "twelve billion, one hundred sixteen million, six hundred sixty-four thousand, two hundred forty-nine".