12446636705428 has 12 divisors (see below), whose sum is σ = 22006166959252. Its totient is φ = 6159160431360.

The previous prime is 12446636705411. The next prime is 12446636705441. The reversal of 12446636705428 is 82450763664421.

It can be written as a sum of positive squares in 2 ways, for example, as 7980692800144 + 4465943905284 = 2825012^2 + 2113278^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16039479903 + ... + 16039480678.

Almost surely, 2^{12446636705428} is an apocalyptic number.

It is an amenable number.

12446636705428 is a deficient number, since it is larger than the sum of its proper divisors (9559530253824).

12446636705428 is a wasteful number, since it uses less digits than its factorization.

12446636705428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32078960682 (or 32078960680 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 58.

The spelling of 12446636705428 in words is "twelve trillion, four hundred forty-six billion, six hundred thirty-six million, seven hundred five thousand, four hundred twenty-eight".