12068779391 has 2 divisors, whose sum is σ = 12068779392. Its totient is φ = 12068779390.

The previous prime is 12068779363. The next prime is 12068779441. The reversal of 12068779391 is 19397786021.

It is a weak prime.

It is an emirp because it is prime and its reverse (19397786021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12068779391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12068779321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6034389695 + 6034389696.

It is an arithmetic number, because the mean of its divisors is an integer number (6034389696).

Almost surely, 2^12068779391 is an apocalyptic number.

12068779391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12068779391 is an equidigital number, since it uses as much as digits as its factorization.

12068779391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 12068779391 in words is "twelve billion, sixty-eight million, seven hundred seventy-nine thousand, three hundred ninety-one".