12606802517 has 4 divisors (see below), whose sum is σ = 12614180940. Its totient is φ = 12599424096.

The previous prime is 12606802513. The next prime is 12606802567. The reversal of 12606802517 is 71520860621.

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 2906719396 + 9700083121 = 53914^2 + 98489^2 .

It is a cyclic number.

It is not a de Polignac number, because 12606802517 - 2² = 12606802513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12606802513) 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, 3686648 + ... + 3690065.

It is an arithmetic number, because the mean of its divisors is an integer number (3153545235).

Almost surely, 2^12606802517 is an apocalyptic number.

It is an amenable number.

12606802517 is a deficient number, since it is larger than the sum of its proper divisors (7378423).

12606802517 is an equidigital number, since it uses as much as digits as its factorization.

12606802517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7378422.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 12606802517 in words is "twelve billion, six hundred six million, eight hundred two thousand, five hundred seventeen".