43942636448 has 12 divisors (see below), whose sum is σ = 86512065570. Its totient is φ = 21971318208.

The previous prime is 43942636447. The next prime is 43942636471. The reversal of 43942636448 is 84463624934.

It can be written as a sum of positive squares in only one way, i.e., 30803058064 + 13139578384 = 175508^2 + 114628^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 43942636448.

It is not an unprimeable number, because it can be changed into a prime (43942636447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686603663 + ... + 686603726.

Almost surely, 2^43942636448 is an apocalyptic number.

It is an amenable number.

43942636448 is a deficient number, since it is larger than the sum of its proper divisors (42569429122).

43942636448 is a wasteful number, since it uses less digits than its factorization.

43942636448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373207399 (or 1373207391 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 53.

The spelling of 43942636448 in words is "forty-three billion, nine hundred forty-two million, six hundred thirty-six thousand, four hundred forty-eight".