12746651395321 has 2 divisors, whose sum is σ = 12746651395322. Its totient is φ = 12746651395320.

The previous prime is 12746651395217. The next prime is 12746651395333. The reversal of 12746651395321 is 12359315664721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11529854878096 + 1216796517225 = 3395564^2 + 1103085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12746651395321 is a prime.

It is not a weakly prime, because it can be changed into another prime (12746651393321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6373325697660 + 6373325697661.

It is an arithmetic number, because the mean of its divisors is an integer number (6373325697661).

Almost surely, 2^{12746651395321} is an apocalyptic number.

It is an amenable number.

12746651395321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12746651395321 is an equidigital number, since it uses as much as digits as its factorization.

12746651395321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 55.

The spelling of 12746651395321 in words is "twelve trillion, seven hundred forty-six billion, six hundred fifty-one million, three hundred ninety-five thousand, three hundred twenty-one".