12768261505403 has 8 divisors (see below), whose sum is σ = 12784700230272. Its totient is φ = 12751829673856.

The previous prime is 12768261505393. The next prime is 12768261505423. The reversal of 12768261505403 is 30450516286721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12768261505403 - 2⁴ = 12768261505387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12768261505423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1988726 + ... + 5430612.

It is an arithmetic number, because the mean of its divisors is an integer number (1598087528784).

Almost surely, 2^{12768261505403} is an apocalyptic number.

12768261505403 is a deficient number, since it is larger than the sum of its proper divisors (16438724869).

12768261505403 is an equidigital number, since it uses as much as digits as its factorization.

12768261505403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446661.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 12768261505403 in words is "twelve trillion, seven hundred sixty-eight billion, two hundred sixty-one million, five hundred five thousand, four hundred three".