12346878064 has 20 divisors (see below), whose sum is σ = 24746976360. Its totient is φ = 5960561600.

The previous prime is 12346878041. The next prime is 12346878083. The reversal of 12346878064 is 46087864321.

It is a junction number, because it is equal to n+sod(n) for n = 12346877999 and 12346878017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13304362 + ... + 13305289.

It is an arithmetic number, because the mean of its divisors is an integer number (1237348818).

Almost surely, 2^12346878064 is an apocalyptic number.

It is an amenable number.

12346878064 is an abundant number, since it is smaller than the sum of its proper divisors (12400098296).

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

12346878064 is a wasteful number, since it uses less digits than its factorization.

12346878064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26609688 (or 26609682 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 12346878064 in words is "twelve billion, three hundred forty-six million, eight hundred seventy-eight thousand, sixty-four".