12383840555856 has 320 divisors, whose sum is σ = 46924256655360. Its totient is φ = 3027371120640.

The previous prime is 12383840555813. The next prime is 12383840555857. The reversal of 12383840555856 is 65855504838321.

It is a happy number.

12383840555856 is a `hidden beast` number, since 1 + 2 + 3 + 8 + 3 + 8 + 40 + 5 + 5 + 585 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 12383840555793 and 12383840555802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12383840555857) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10384206 + ... + 11515181.

It is an arithmetic number, because the mean of its divisors is an integer number (146638302048).

Almost surely, 2^{12383840555856} is an apocalyptic number.

12383840555856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12383840555856 is an abundant number, since it is smaller than the sum of its proper divisors (34540416099504).

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

12383840555856 is a wasteful number, since it uses less digits than its factorization.

12383840555856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21899439 (or 21899427 counting only the distinct ones).

The product of its (nonzero) digits is 138240000, while the sum is 63.

The spelling of 12383840555856 in words is "twelve trillion, three hundred eighty-three billion, eight hundred forty million, five hundred fifty-five thousand, eight hundred fifty-six".