12597683321 has 4 divisors (see below), whose sum is σ = 12622433700. Its totient is φ = 12572932944.

The previous prime is 12597683291. The next prime is 12597683327. The reversal of 12597683321 is 12338679521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11153683321 + 1444000000 = 105611^2 + 38000^2 .

It is a cyclic number.

It is not a de Polignac number, because 12597683321 - 2²⁶ = 12530574457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12597683327) 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 in 3 ways as a sum of consecutive naturals, for example, 12374426 + ... + 12375443.

It is an arithmetic number, because the mean of its divisors is an integer number (3155608425).

Almost surely, 2^12597683321 is an apocalyptic number.

It is an amenable number.

12597683321 is a deficient number, since it is larger than the sum of its proper divisors (24750379).

12597683321 is an equidigital number, since it uses as much as digits as its factorization.

12597683321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24750378.

The product of its digits is 544320, while the sum is 47.

The spelling of 12597683321 in words is "twelve billion, five hundred ninety-seven million, six hundred eighty-three thousand, three hundred twenty-one".