12684897216 has 112 divisors (see below), whose sum is σ = 37326194080. Its totient is φ = 4224337920.

The previous prime is 12684897193. The next prime is 12684897271. The reversal of 12684897216 is 61279848621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2279910 + ... + 2285466.

It is an arithmetic number, because the mean of its divisors is an integer number (333269590).

Almost surely, 2^12684897216 is an apocalyptic number.

12684897216 is a gapful number since it is divisible by the number (16) 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 12684897216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18663097040).

12684897216 is an abundant number, since it is smaller than the sum of its proper divisors (24641296864).

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

12684897216 is a wasteful number, since it uses less digits than its factorization.

12684897216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899 (or 6883 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 12684897216 in words is "twelve billion, six hundred eighty-four million, eight hundred ninety-seven thousand, two hundred sixteen".