12559898669 has 2 divisors, whose sum is σ = 12559898670. Its totient is φ = 12559898668.

The previous prime is 12559898653. The next prime is 12559898737. The reversal of 12559898669 is 96689895521.

It is an a-pointer prime, because the next prime (12559898737) can be obtained adding 12559898669 to its sum of digits (68).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11801997769 + 757900900 = 108637^2 + 27530^2 .

It is a cyclic number.

It is not a de Polignac number, because 12559898669 - 2⁴ = 12559898653 is a prime.

It is a super-2 number, since 2×12559898669² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12559898599 and 12559898608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12559898269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279949334 + 6279949335.

It is an arithmetic number, because the mean of its divisors is an integer number (6279949335).

Almost surely, 2^12559898669 is an apocalyptic number.

It is an amenable number.

12559898669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12559898669 is an equidigital number, since it uses as much as digits as its factorization.

12559898669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 68.

The spelling of 12559898669 in words is "twelve billion, five hundred fifty-nine million, eight hundred ninety-eight thousand, six hundred sixty-nine".