12665028793 has 2 divisors, whose sum is σ = 12665028794. Its totient is φ = 12665028792.

The previous prime is 12665028787. The next prime is 12665028907. The reversal of 12665028793 is 39782056621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12332768809 + 332259984 = 111053^2 + 18228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12665028793 is a prime.

It is not a weakly prime, because it can be changed into another prime (12665026793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6332514396 + 6332514397.

It is an arithmetic number, because the mean of its divisors is an integer number (6332514397).

Almost surely, 2^12665028793 is an apocalyptic number.

It is an amenable number.

12665028793 is a deficient number, since it is larger than the sum of its proper divisors (1).

12665028793 is an equidigital number, since it uses as much as digits as its factorization.

12665028793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 12665028793 in words is "twelve billion, six hundred sixty-five million, twenty-eight thousand, seven hundred ninety-three".