12863312578 has 32 divisors (see below), whose sum is σ = 19751094000. Its totient is φ = 6281763840.

The previous prime is 12863312549. The next prime is 12863312629. The reversal of 12863312578 is 87521336821.

It can be written as a sum of positive squares in 8 ways, for example, as 10281351609 + 2581960969 = 101397^2 + 50813^2 .

It is an unprimeable number.

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, 7934608 + ... + 7936228.

Almost surely, 2^12863312578 is an apocalyptic number.

12863312578 is a deficient number, since it is larger than the sum of its proper divisors (6887781422).

12863312578 is a wasteful number, since it uses less digits than its factorization.

12863312578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230.

The product of its digits is 483840, while the sum is 46.

The spelling of 12863312578 in words is "twelve billion, eight hundred sixty-three million, three hundred twelve thousand, five hundred seventy-eight".