12664103513 has 4 divisors (see below), whose sum is σ = 12664492980. Its totient is φ = 12663714048.

The previous prime is 12664103509. The next prime is 12664103521. The reversal of 12664103513 is 31530146621.

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 6741723664 + 5922379849 = 82108^2 + 76957^2 .

It is a cyclic number.

It is not a de Polignac number, because 12664103513 - 2² = 12664103509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12664103513.

It is not an unprimeable number, because it can be changed into a prime (12664103213) 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, 141020 + ... + 212637.

It is an arithmetic number, because the mean of its divisors is an integer number (3166123245).

Almost surely, 2^12664103513 is an apocalyptic number.

It is an amenable number.

12664103513 is a deficient number, since it is larger than the sum of its proper divisors (389467).

12664103513 is an equidigital number, since it uses as much as digits as its factorization.

12664103513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389466.

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

The spelling of 12664103513 in words is "twelve billion, six hundred sixty-four million, one hundred three thousand, five hundred thirteen".