12319871939 has 2 divisors, whose sum is σ = 12319871940. Its totient is φ = 12319871938.

The previous prime is 12319871923. The next prime is 12319871989. The reversal of 12319871939 is 93917891321.

It is a weak prime.

It is an emirp because it is prime and its reverse (93917891321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12319871939 - 2⁴ = 12319871923 is a prime.

It is not a weakly prime, because it can be changed into another prime (12319871989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6159935969 + 6159935970.

It is an arithmetic number, because the mean of its divisors is an integer number (6159935970).

Almost surely, 2^12319871939 is an apocalyptic number.

12319871939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12319871939 is an equidigital number, since it uses as much as digits as its factorization.

12319871939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 53.

The spelling of 12319871939 in words is "twelve billion, three hundred nineteen million, eight hundred seventy-one thousand, nine hundred thirty-nine".