12384237779 has 2 divisors, whose sum is σ = 12384237780. Its totient is φ = 12384237778.

The previous prime is 12384237727. The next prime is 12384237799. The reversal of 12384237779 is 97773248321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12384237779 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12384237779.

It is not a weakly prime, because it can be changed into another prime (12384237799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6192118889 + 6192118890.

It is an arithmetic number, because the mean of its divisors is an integer number (6192118890).

Almost surely, 2^12384237779 is an apocalyptic number.

12384237779 is a deficient number, since it is larger than the sum of its proper divisors (1).

12384237779 is an equidigital number, since it uses as much as digits as its factorization.

12384237779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 53.

The spelling of 12384237779 in words is "twelve billion, three hundred eighty-four million, two hundred thirty-seven thousand, seven hundred seventy-nine".