12243940187 has 2 divisors, whose sum is σ = 12243940188. Its totient is φ = 12243940186.

The previous prime is 12243940183. The next prime is 12243940193. The reversal of 12243940187 is 78104934221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12243940187 - 2² = 12243940183 is a prime.

It is not a weakly prime, because it can be changed into another prime (12243940183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6121970093 + 6121970094.

It is an arithmetic number, because the mean of its divisors is an integer number (6121970094).

Almost surely, 2^12243940187 is an apocalyptic number.

12243940187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12243940187 is an equidigital number, since it uses as much as digits as its factorization.

12243940187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 12243940187 in words is "twelve billion, two hundred forty-three million, nine hundred forty thousand, one hundred eighty-seven".