12730678486991 has 2 divisors, whose sum is σ = 12730678486992. Its totient is φ = 12730678486990.

The previous prime is 12730678486963. The next prime is 12730678487029. The reversal of 12730678486991 is 19968487603721.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12730678486991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12730678486921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6365339243495 + 6365339243496.

It is an arithmetic number, because the mean of its divisors is an integer number (6365339243496).

Almost surely, 2^{12730678486991} is an apocalyptic number.

12730678486991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12730678486991 is an equidigital number, since it uses as much as digits as its factorization.

12730678486991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 12730678486991 in words is "twelve trillion, seven hundred thirty billion, six hundred seventy-eight million, four hundred eighty-six thousand, nine hundred ninety-one".