12659766912 has 256 divisors, whose sum is σ = 41180092800. Its totient is φ = 3804143616.

The previous prime is 12659766901. The next prime is 12659766913. The reversal of 12659766912 is 21966795621.

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

It is not an unprimeable number, because it can be changed into a prime (12659766913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1928628 + ... + 1935180.

Almost surely, 2^12659766912 is an apocalyptic number.

12659766912 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 12659766912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20590046400).

12659766912 is an abundant number, since it is smaller than the sum of its proper divisors (28520325888).

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

12659766912 is a wasteful number, since it uses less digits than its factorization.

12659766912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632 (or 6614 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The spelling of 12659766912 in words is "twelve billion, six hundred fifty-nine million, seven hundred sixty-six thousand, nine hundred twelve".