12768989546555 has 16 divisors (see below), whose sum is σ = 16717261819104. Its totient is φ = 9285708026880.

The previous prime is 12768989546549. The next prime is 12768989546557. The reversal of 12768989546555 is 55564598986721.

It is not a de Polignac number, because 12768989546555 - 2⁴ = 12768989546539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12768989546555.

It is not an unprimeable number, because it can be changed into a prime (12768989546557) 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 in 15 ways as a sum of consecutive naturals, for example, 9751382 + ... + 10983051.

It is an arithmetic number, because the mean of its divisors is an integer number (1044828863694).

Almost surely, 2^{12768989546555} is an apocalyptic number.

12768989546555 is a deficient number, since it is larger than the sum of its proper divisors (3948272272549).

12768989546555 is a wasteful number, since it uses less digits than its factorization.

12768989546555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20745646.

The product of its digits is 6531840000, while the sum is 80.

The spelling of 12768989546555 in words is "twelve trillion, seven hundred sixty-eight billion, nine hundred eighty-nine million, five hundred forty-six thousand, five hundred fifty-five".