12239181967 has 2 divisors, whose sum is σ = 12239181968. Its totient is φ = 12239181966.

The previous prime is 12239181959. The next prime is 12239182031. The reversal of 12239181967 is 76918193221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12239181967 - 2³ = 12239181959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12239181967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12239181917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6119590983 + 6119590984.

It is an arithmetic number, because the mean of its divisors is an integer number (6119590984).

Almost surely, 2^12239181967 is an apocalyptic number.

12239181967 is a deficient number, since it is larger than the sum of its proper divisors (1).

12239181967 is an equidigital number, since it uses as much as digits as its factorization.

12239181967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The spelling of 12239181967 in words is "twelve billion, two hundred thirty-nine million, one hundred eighty-one thousand, nine hundred sixty-seven".