12962786857 has 2 divisors, whose sum is σ = 12962786858. Its totient is φ = 12962786856.

The previous prime is 12962786839. The next prime is 12962786929. The reversal of 12962786857 is 75868726921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10445657616 + 2517129241 = 102204^2 + 50171^2 .

It is a cyclic number.

It is not a de Polignac number, because 12962786857 - 2¹⁹ = 12962262569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12962786795 and 12962786804.

It is not a weakly prime, because it can be changed into another prime (12962786827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6481393428 + 6481393429.

It is an arithmetic number, because the mean of its divisors is an integer number (6481393429).

Almost surely, 2^12962786857 is an apocalyptic number.

It is an amenable number.

12962786857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12962786857 is an equidigital number, since it uses as much as digits as its factorization.

12962786857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 61.

The spelling of 12962786857 in words is "twelve billion, nine hundred sixty-two million, seven hundred eighty-six thousand, eight hundred fifty-seven".