12678308712 has 24 divisors (see below), whose sum is σ = 34337086290. Its totient is φ = 4226102880.

The previous prime is 12678308707. The next prime is 12678308719. The reversal of 12678308712 is 21780387621.

It can be written as a sum of positive squares in only one way, i.e., 10723430916 + 1954877796 = 103554^2 + 44214^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (12678308719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88043739 + ... + 88043882.

Almost surely, 2^12678308712 is an apocalyptic number.

12678308712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12678308712 is an abundant number, since it is smaller than the sum of its proper divisors (21658777578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12678308712 is a wasteful number, since it uses less digits than its factorization.

12678308712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176087633 (or 176087626 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 12678308712 in words is "twelve billion, six hundred seventy-eight million, three hundred eight thousand, seven hundred twelve".