12784288305 has 8 divisors (see below), whose sum is σ = 20454861312. Its totient is φ = 6818287088.

The previous prime is 12784288267. The next prime is 12784288367. The reversal of 12784288305 is 50388248721.

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 12784288305 - 2⁶ = 12784288241 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426142929 + ... + 426142958.

It is an arithmetic number, because the mean of its divisors is an integer number (2556857664).

Almost surely, 2^12784288305 is an apocalyptic number.

12784288305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12784288305 is a deficient number, since it is larger than the sum of its proper divisors (7670573007).

12784288305 is an equidigital number, since it uses as much as digits as its factorization.

12784288305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852285895.

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 12784288305 in words is "twelve billion, seven hundred eighty-four million, two hundred eighty-eight thousand, three hundred five".