12746722357 has 2 divisors, whose sum is σ = 12746722358. Its totient is φ = 12746722356.

The previous prime is 12746722343. The next prime is 12746722381. The reversal of 12746722357 is 75322764721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7061713156 + 5685009201 = 84034^2 + 75399^2 .

It is an emirp because it is prime and its reverse (75322764721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12746722357 - 2³¹ = 10599238709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12746722327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6373361178 + 6373361179.

It is an arithmetic number, because the mean of its divisors is an integer number (6373361179).

Almost surely, 2^12746722357 is an apocalyptic number.

It is an amenable number.

12746722357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12746722357 is an equidigital number, since it uses as much as digits as its factorization.

12746722357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 987840, while the sum is 46.

The spelling of 12746722357 in words is "twelve billion, seven hundred forty-six million, seven hundred twenty-two thousand, three hundred fifty-seven".