12026309602609 has 9 divisors (see below), whose sum is σ = 12055653396993. Its totient is φ = 11997037084032.

The previous prime is 12026309602553. The next prime is 12026309602633. The reversal of 12026309602609 is 90620690362021.

The square root of 12026309602609 is 3467897.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1016336178225 + 11009973424384 = 1008135^2 + 3318128^2 .

It is not a de Polignac number, because 12026309602609 - 2⁷ = 12026309602481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12026309602649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1501595397 + ... + 1501603405.

Almost surely, 2^{12026309602609} is an apocalyptic number.

12026309602609 is the 3467897-th square number.

12026309602609 is the 1733949-th centered octagonal number.

It is an amenable number.

12026309602609 is a deficient number, since it is larger than the sum of its proper divisors (29343794384).

12026309602609 is an frugal number, since it uses more digits than its factorization.

12026309602609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16884 (or 8442 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 12026309602609 in words is "twelve trillion, twenty-six billion, three hundred nine million, six hundred two thousand, six hundred nine".