12191266149 has 8 divisors (see below), whose sum is σ = 16281541152. Its totient is φ = 8114250960.

The previous prime is 12191266147. The next prime is 12191266159. The reversal of 12191266149 is 94166219121.

It is a happy number.

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

It is not a de Polignac number, because 12191266149 - 2¹ = 12191266147 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12191266149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191266147) 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, 3312807 + ... + 3316484.

It is an arithmetic number, because the mean of its divisors is an integer number (2035192644).

Almost surely, 2^12191266149 is an apocalyptic number.

It is an amenable number.

12191266149 is a deficient number, since it is larger than the sum of its proper divisors (4090275003).

12191266149 is an equidigital number, since it uses as much as digits as its factorization.

12191266149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629907.

The product of its digits is 46656, while the sum is 42.

The spelling of 12191266149 in words is "twelve billion, one hundred ninety-one million, two hundred sixty-six thousand, one hundred forty-nine".