12643159393 has 2 divisors, whose sum is σ = 12643159394. Its totient is φ = 12643159392.

The previous prime is 12643159351. The next prime is 12643159411. The reversal of 12643159393 is 39395134621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6475099024 + 6168060369 = 80468^2 + 78537^2 .

It is a cyclic number.

It is not a de Polignac number, because 12643159393 - 2⁹ = 12643158881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12643159313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321579696 + 6321579697.

It is an arithmetic number, because the mean of its divisors is an integer number (6321579697).

Almost surely, 2^12643159393 is an apocalyptic number.

It is an amenable number.

12643159393 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643159393 is an equidigital number, since it uses as much as digits as its factorization.

12643159393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 46.

The spelling of 12643159393 in words is "twelve billion, six hundred forty-three million, one hundred fifty-nine thousand, three hundred ninety-three".