12640002593 has 4 divisors (see below), whose sum is σ = 12667661700. Its totient is φ = 12612343488.

The previous prime is 12640002587. The next prime is 12640002623. The reversal of 12640002593 is 39520004621.

It is a happy number.

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 10162252864 + 2477749729 = 100808^2 + 49777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12640002593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12640002523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13828868 + ... + 13829781.

It is an arithmetic number, because the mean of its divisors is an integer number (3166915425).

Almost surely, 2^12640002593 is an apocalyptic number.

It is an amenable number.

12640002593 is a deficient number, since it is larger than the sum of its proper divisors (27659107).

12640002593 is an equidigital number, since it uses as much as digits as its factorization.

12640002593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27659106.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 12640002593 in words is "twelve billion, six hundred forty million, two thousand, five hundred ninety-three".