12768238968645 has 8 divisors (see below), whose sum is σ = 20429182349856. Its totient is φ = 6809727449936.

The previous prime is 12768238968631. The next prime is 12768238968731. The reversal of 12768238968645 is 54686983286721.

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 12768238968645 - 2¹⁸ = 12768238706501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425607965607 + ... + 425607965636.

It is an arithmetic number, because the mean of its divisors is an integer number (2553647793732).

Almost surely, 2^{12768238968645} is an apocalyptic number.

12768238968645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12768238968645 is a deficient number, since it is larger than the sum of its proper divisors (7660943381211).

12768238968645 is an equidigital number, since it uses as much as digits as its factorization.

12768238968645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851215931251.

The product of its digits is 1672151040, while the sum is 75.

The spelling of 12768238968645 in words is "twelve trillion, seven hundred sixty-eight billion, two hundred thirty-eight million, nine hundred sixty-eight thousand, six hundred forty-five".