12607121609 has 2 divisors, whose sum is σ = 12607121610. Its totient is φ = 12607121608.

The previous prime is 12607121561. The next prime is 12607121677. The reversal of 12607121609 is 90612170621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11187715984 + 1419405625 = 105772^2 + 37675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12607121609 is a prime.

It is a super-2 number, since 2×12607121609² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12607121689) 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 as a sum of consecutive naturals, namely, 6303560804 + 6303560805.

It is an arithmetic number, because the mean of its divisors is an integer number (6303560805).

Almost surely, 2^12607121609 is an apocalyptic number.

It is an amenable number.

12607121609 is a deficient number, since it is larger than the sum of its proper divisors (1).

12607121609 is an equidigital number, since it uses as much as digits as its factorization.

12607121609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 12607121609 in words is "twelve billion, six hundred seven million, one hundred twenty-one thousand, six hundred nine".