12440452424 has 8 divisors (see below), whose sum is σ = 23325848310. Its totient is φ = 6220226208.

The previous prime is 12440452411. The next prime is 12440452447. The reversal of 12440452424 is 42425404421.

It can be written as a sum of positive squares in only one way, i.e., 11870102500 + 570349924 = 108950^2 + 23882^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777528269 + ... + 777528284.

Almost surely, 2^12440452424 is an apocalyptic number.

It is an amenable number.

12440452424 is a deficient number, since it is larger than the sum of its proper divisors (10885395886).

12440452424 is a wasteful number, since it uses less digits than its factorization.

12440452424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555056559 (or 1555056555 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 12440452424 its reverse (42425404421), we get a palindrome (54865856845).

The spelling of 12440452424 in words is "twelve billion, four hundred forty million, four hundred fifty-two thousand, four hundred twenty-four".