12856232352 has 216 divisors, whose sum is σ = 37460810016. Its totient is φ = 3852769536.

The previous prime is 12856232351. The next prime is 12856232357. The reversal of 12856232352 is 25323265821.

It is a super-2 number, since 2×12856232352² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12856232352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856232351) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 101230113 + ... + 101230239.

It is an arithmetic number, because the mean of its divisors is an integer number (173429676).

Almost surely, 2^12856232352 is an apocalyptic number.

12856232352 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 12856232352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18730405008).

12856232352 is an abundant number, since it is smaller than the sum of its proper divisors (24604577664).

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

12856232352 is a wasteful number, since it uses less digits than its factorization.

12856232352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 174 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The spelling of 12856232352 in words is "twelve billion, eight hundred fifty-six million, two hundred thirty-two thousand, three hundred fifty-two".