12956899231249 has 2 divisors, whose sum is σ = 12956899231250. Its totient is φ = 12956899231248.

The previous prime is 12956899231193. The next prime is 12956899231321. The reversal of 12956899231249 is 94213299865921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8668272421249 + 4288626810000 = 2944193^2 + 2070900^2 .

It is a cyclic number.

It is not a de Polignac number, because 12956899231249 - 2⁷ = 12956899231121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12956899231349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478449615624 + 6478449615625.

It is an arithmetic number, because the mean of its divisors is an integer number (6478449615625).

Almost surely, 2^{12956899231249} is an apocalyptic number.

It is an amenable number.

12956899231249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956899231249 is an equidigital number, since it uses as much as digits as its factorization.

12956899231249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151165440, while the sum is 70.

The spelling of 12956899231249 in words is "twelve trillion, nine hundred fifty-six billion, eight hundred ninety-nine million, two hundred thirty-one thousand, two hundred forty-nine".