12339523187 has 2 divisors, whose sum is σ = 12339523188. Its totient is φ = 12339523186.

The previous prime is 12339523177. The next prime is 12339523201. The reversal of 12339523187 is 78132593321.

It is a weak prime.

It is an emirp because it is prime and its reverse (78132593321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12339523187 - 2²⁰ = 12338474611 is a prime.

It is not a weakly prime, because it can be changed into another prime (12339523127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6169761593 + 6169761594.

It is an arithmetic number, because the mean of its divisors is an integer number (6169761594).

Almost surely, 2^12339523187 is an apocalyptic number.

12339523187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12339523187 is an equidigital number, since it uses as much as digits as its factorization.

12339523187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The spelling of 12339523187 in words is "twelve billion, three hundred thirty-nine million, five hundred twenty-three thousand, one hundred eighty-seven".