12323818872 has 96 divisors (see below), whose sum is σ = 34920128880. Its totient is φ = 4071513600.

The previous prime is 12323818867. The next prime is 12323818883. The reversal of 12323818872 is 27881832321.

12323818872 is a `hidden beast` number, since 123 + 2 + 381 + 88 + 72 = 666.

It is a super-3 number, since 3×12323818872³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191622 + ... + 247722.

Almost surely, 2^12323818872 is an apocalyptic number.

12323818872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12323818872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17460064440).

12323818872 is an abundant number, since it is smaller than the sum of its proper divisors (22596310008).

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

12323818872 is a wasteful number, since it uses less digits than its factorization.

12323818872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56235 (or 56219 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 12323818872 in words is "twelve billion, three hundred twenty-three million, eight hundred eighteen thousand, eight hundred seventy-two".