12712826857 has 2 divisors, whose sum is σ = 12712826858. Its totient is φ = 12712826856.

The previous prime is 12712826837. The next prime is 12712826897. The reversal of 12712826857 is 75862821721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8791687696 + 3921139161 = 93764^2 + 62619^2 .

It is a cyclic number.

It is not a de Polignac number, because 12712826857 - 2²⁷ = 12578609129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12712826857.

It is not a weakly prime, because it can be changed into another prime (12712826837) 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, 6356413428 + 6356413429.

It is an arithmetic number, because the mean of its divisors is an integer number (6356413429).

Almost surely, 2^12712826857 is an apocalyptic number.

It is an amenable number.

12712826857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12712826857 is an equidigital number, since it uses as much as digits as its factorization.

12712826857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 49.

The spelling of 12712826857 in words is "twelve billion, seven hundred twelve million, eight hundred twenty-six thousand, eight hundred fifty-seven".