12356814678 has 16 divisors (see below), whose sum is σ = 26614677936. Its totient is φ = 3802096800.

The previous prime is 12356814671. The next prime is 12356814703. The reversal of 12356814678 is 87641865321.

It is a self number, because there is not a number n which added to its sum of digits gives 12356814678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12356814671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79210273 + ... + 79210428.

It is an arithmetic number, because the mean of its divisors is an integer number (1663417371).

Almost surely, 2^12356814678 is an apocalyptic number.

12356814678 is an abundant number, since it is smaller than the sum of its proper divisors (14257863258).

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

12356814678 is a wasteful number, since it uses less digits than its factorization.

12356814678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158420719.

The product of its digits is 1935360, while the sum is 51.

The spelling of 12356814678 in words is "twelve billion, three hundred fifty-six million, eight hundred fourteen thousand, six hundred seventy-eight".