12670621709 has 2 divisors, whose sum is σ = 12670621710. Its totient is φ = 12670621708.

The previous prime is 12670621697. The next prime is 12670621721. The reversal of 12670621709 is 90712607621.

12670621709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (12670621697) and next prime (12670621721).

It can be written as a sum of positive squares in only one way, i.e., 6789265609 + 5881356100 = 82397^2 + 76690^2 .

It is an emirp because it is prime and its reverse (90712607621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12670621709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12670621009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6335310854 + 6335310855.

It is an arithmetic number, because the mean of its divisors is an integer number (6335310855).

Almost surely, 2^12670621709 is an apocalyptic number.

It is an amenable number.

12670621709 is a deficient number, since it is larger than the sum of its proper divisors (1).

12670621709 is an equidigital number, since it uses as much as digits as its factorization.

12670621709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 12670621709 in words is "twelve billion, six hundred seventy million, six hundred twenty-one thousand, seven hundred nine".