12318623816 has 8 divisors (see below), whose sum is σ = 23097419670. Its totient is φ = 6159311904.

The previous prime is 12318623771. The next prime is 12318623869. The reversal of 12318623816 is 61832681321.

12318623816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11199988900 + 1118634916 = 105830^2 + 33446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769913981 + ... + 769913996.

Almost surely, 2^12318623816 is an apocalyptic number.

It is an amenable number.

12318623816 is a deficient number, since it is larger than the sum of its proper divisors (10778795854).

12318623816 is a wasteful number, since it uses less digits than its factorization.

12318623816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539827983 (or 1539827979 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The spelling of 12318623816 in words is "twelve billion, three hundred eighteen million, six hundred twenty-three thousand, eight hundred sixteen".