12384128656 has 45 divisors (see below), whose sum is σ = 24603258531. Its totient is φ = 6038714976.

The previous prime is 12384128629. The next prime is 12384128663. The reversal of 12384128656 is 65682148321.

The square root of 12384128656 is 111284.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19140525 + ... + 19141171.

Almost surely, 2^12384128656 is an apocalyptic number.

12384128656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12384128656 is the 111284-th square number.

It is an amenable number.

12384128656 is a deficient number, since it is larger than the sum of its proper divisors (12219129875).

12384128656 is an frugal number, since it uses more digits than its factorization.

12384128656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388 (or 692 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The spelling of 12384128656 in words is "twelve billion, three hundred eighty-four million, one hundred twenty-eight thousand, six hundred fifty-six".