12868334388 has 144 divisors (see below), whose sum is σ = 40145961856. Its totient is φ = 3384426240.

The previous prime is 12868334387. The next prime is 12868334389. The reversal of 12868334388 is 88343386821.

12868334388 is a `hidden beast` number, since 128 + 6 + 83 + 3 + 438 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (12868334387) and next prime (12868334389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12868334387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1216683 + ... + 1227213.

Almost surely, 2^12868334388 is an apocalyptic number.

12868334388 is a gapful number since it is divisible by the number (18) 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 12868334388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20072980928).

12868334388 is an abundant number, since it is smaller than the sum of its proper divisors (27277627468).

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

12868334388 is a wasteful number, since it uses less digits than its factorization.

12868334388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10934 (or 10929 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The spelling of 12868334388 in words is "twelve billion, eight hundred sixty-eight million, three hundred thirty-four thousand, three hundred eighty-eight".