12560357329 has 27 divisors (see below), whose sum is σ = 14038636563. Its totient is φ = 11232404352.

The previous prime is 12560357321. The next prime is 12560357347. The reversal of 12560357329 is 92375306521.

The square root of 12560357329 is 112073.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 9328662225 + 3231695104 = 96585^2 + 56848^2 .

It is not a de Polignac number, because 12560357329 - 2³ = 12560357321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12560357321) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 53906997 + ... + 53907229.

Almost surely, 2^12560357329 is an apocalyptic number.

12560357329 is the 112073-rd square number.

12560357329 is the 56037-th centered octagonal number.

It is an amenable number.

12560357329 is a deficient number, since it is larger than the sum of its proper divisors (1478279234).

12560357329 is an frugal number, since it uses more digits than its factorization.

12560357329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 43.

The spelling of 12560357329 in words is "twelve billion, five hundred sixty million, three hundred fifty-seven thousand, three hundred twenty-nine".