12559764869 has 2 divisors, whose sum is σ = 12559764870. Its totient is φ = 12559764868.

The previous prime is 12559764851. The next prime is 12559764929. The reversal of 12559764869 is 96846795521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10211102500 + 2348662369 = 101050^2 + 48463^2 .

It is a cyclic number.

It is not a de Polignac number, because 12559764869 - 2³² = 8264797573 is a prime.

It is a super-2 number, since 2×12559764869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12559764839) 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, 6279882434 + 6279882435.

It is an arithmetic number, because the mean of its divisors is an integer number (6279882435).

Almost surely, 2^12559764869 is an apocalyptic number.

It is an amenable number.

12559764869 is a deficient number, since it is larger than the sum of its proper divisors (1).

12559764869 is an equidigital number, since it uses as much as digits as its factorization.

12559764869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 62.

The spelling of 12559764869 in words is "twelve billion, five hundred fifty-nine million, seven hundred sixty-four thousand, eight hundred sixty-nine".