12440133191 has 2 divisors, whose sum is σ = 12440133192. Its totient is φ = 12440133190.

The previous prime is 12440133187. The next prime is 12440133221. The reversal of 12440133191 is 19133104421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19133104421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12440133191 - 2² = 12440133187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12440133151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220066595 + 6220066596.

It is an arithmetic number, because the mean of its divisors is an integer number (6220066596).

Almost surely, 2^12440133191 is an apocalyptic number.

12440133191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440133191 is an equidigital number, since it uses as much as digits as its factorization.

12440133191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 12440133191 in words is "twelve billion, four hundred forty million, one hundred thirty-three thousand, one hundred ninety-one".