12966832384 has 81 divisors (see below), whose sum is σ = 28493963491. Its totient is φ = 5884904960.

The previous prime is 12966832381. The next prime is 12966832421. The reversal of 12966832384 is 48323866921.

The square root of 12966832384 is 113872.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×12966832384² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12966832381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20041149 + ... + 20041795.

Almost surely, 2^12966832384 is an apocalyptic number.

12966832384 is the 113872-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12966832384

12966832384 is an abundant number, since it is smaller than the sum of its proper divisors (15527131107).

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

12966832384 is an frugal number, since it uses more digits than its factorization.

12966832384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 660 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 12966832384 in words is "twelve billion, nine hundred sixty-six million, eight hundred thirty-two thousand, three hundred eighty-four".