12388580416 has 21 divisors (see below), whose sum is σ = 24585356341. Its totient is φ = 6193844992.

The previous prime is 12388580411. The next prime is 12388580417. The reversal of 12388580416 is 61408588321.

The square root of 12388580416 is 111304.

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

It can be written as a sum of positive squares in only one way, i.e., 7992360000 + 4396220416 = 89400^2 + 66304^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12388580411) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 883476 + ... + 897388.

Almost surely, 2^12388580416 is an apocalyptic number.

12388580416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12388580416 is the 111304-th square number.

It is an amenable number.

12388580416 is a deficient number, since it is larger than the sum of its proper divisors (12196775925).

12388580416 is an frugal number, since it uses more digits than its factorization.

12388580416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27838 (or 13915 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 12388580416 in words is "twelve billion, three hundred eighty-eight million, five hundred eighty thousand, four hundred sixteen".