12529328369 has 2 divisors, whose sum is σ = 12529328370. Its totient is φ = 12529328368.

The previous prime is 12529328363. The next prime is 12529328417. The reversal of 12529328369 is 96382392521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12518700769 + 10627600 = 111887^2 + 3260^2 .

It is a cyclic number.

It is not a de Polignac number, because 12529328369 - 2⁴ = 12529328353 is a prime.

It is a super-2 number, since 2×12529328369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12529328363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6264664184 + 6264664185.

It is an arithmetic number, because the mean of its divisors is an integer number (6264664185).

Almost surely, 2^12529328369 is an apocalyptic number.

It is an amenable number.

12529328369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12529328369 is an equidigital number, since it uses as much as digits as its factorization.

12529328369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The spelling of 12529328369 in words is "twelve billion, five hundred twenty-nine million, three hundred twenty-eight thousand, three hundred sixty-nine".