12318320628 has 36 divisors (see below), whose sum is σ = 31238127648. Its totient is φ = 4092900240.

The previous prime is 12318320617. The next prime is 12318320629. The reversal of 12318320628 is 82602381321.

12318320628 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 8 + 3 + 20 + 628 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12318320592 and 12318320601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318320629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538926 + ... + 561317.

It is an arithmetic number, because the mean of its divisors is an integer number (867725768).

Almost surely, 2^12318320628 is an apocalyptic number.

12318320628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12318320628 is an abundant number, since it is smaller than the sum of its proper divisors (18919807020).

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

12318320628 is a wasteful number, since it uses less digits than its factorization.

12318320628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100564 (or 1100559 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 12318320628 in words is "twelve billion, three hundred eighteen million, three hundred twenty thousand, six hundred twenty-eight".