12806892513544 has 8 divisors (see below), whose sum is σ = 24012923462910. Its totient is φ = 6403446256768.

The previous prime is 12806892513479. The next prime is 12806892513553. The reversal of 12806892513544 is 44531529860821.

It can be written as a sum of positive squares in only one way, i.e., 12131553709444 + 675338804100 = 3483038^2 + 821790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800430782089 + ... + 800430782104.

Almost surely, 2^{12806892513544} is an apocalyptic number.

It is an amenable number.

12806892513544 is a deficient number, since it is larger than the sum of its proper divisors (11206030949366).

12806892513544 is a wasteful number, since it uses less digits than its factorization.

12806892513544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600861564199 (or 1600861564195 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 58.

The spelling of 12806892513544 in words is "twelve trillion, eight hundred six billion, eight hundred ninety-two million, five hundred thirteen thousand, five hundred forty-four".