12569378357 has 2 divisors, whose sum is σ = 12569378358. Its totient is φ = 12569378356.

The previous prime is 12569378317. The next prime is 12569378431. The reversal of 12569378357 is 75387396521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12460363876 + 109014481 = 111626^2 + 10441^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12569378357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12569378317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284689178 + 6284689179.

It is an arithmetic number, because the mean of its divisors is an integer number (6284689179).

Almost surely, 2^12569378357 is an apocalyptic number.

It is an amenable number.

12569378357 is a deficient number, since it is larger than the sum of its proper divisors (1).

12569378357 is an equidigital number, since it uses as much as digits as its factorization.

12569378357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9525600, while the sum is 56.

The spelling of 12569378357 in words is "twelve billion, five hundred sixty-nine million, three hundred seventy-eight thousand, three hundred fifty-seven".