12443354656 has 24 divisors (see below), whose sum is σ = 24588941580. Its totient is φ = 6198544128.

The previous prime is 12443354593. The next prime is 12443354659. The reversal of 12443354656 is 65645334421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10016807056 + 2426547600 = 100084^2 + 49260^2 .

It is not an unprimeable number, because it can be changed into a prime (12443354659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714171 + ... + 731386.

Almost surely, 2^12443354656 is an apocalyptic number.

12443354656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12443354656 is a deficient number, since it is larger than the sum of its proper divisors (12145586924).

12443354656 is a wasteful number, since it uses less digits than its factorization.

12443354656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445836 (or 1445828 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 12443354656 in words is "twelve billion, four hundred forty-three million, three hundred fifty-four thousand, six hundred fifty-six".