12779233011971 has 2 divisors, whose sum is σ = 12779233011972. Its totient is φ = 12779233011970.

The previous prime is 12779233011871. The next prime is 12779233011991. The reversal of 12779233011971 is 17911033297721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12779233011971 is a prime.

It is not a weakly prime, because it can be changed into another prime (12779233011991) 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, 6389616505985 + 6389616505986.

It is an arithmetic number, because the mean of its divisors is an integer number (6389616505986).

Almost surely, 2^{12779233011971} is an apocalyptic number.

12779233011971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12779233011971 is an equidigital number, since it uses as much as digits as its factorization.

12779233011971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000188, while the sum is 53.

The spelling of 12779233011971 in words is "twelve trillion, seven hundred seventy-nine billion, two hundred thirty-three million, eleven thousand, nine hundred seventy-one".