43440134432 has 12 divisors (see below), whose sum is σ = 85522764726. Its totient is φ = 21720067200.

The previous prime is 43440134341. The next prime is 43440134443. The reversal of 43440134432 is 23443104434.

It can be written as a sum of positive squares in only one way, i.e., 41451331216 + 1988803216 = 203596^2 + 44596^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1357504201 = 43440134432 / (4 + 3 + 4 + 4 + 0 + 1 + 3 + 4 + 4 + 3 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678752069 + ... + 678752132.

Almost surely, 2^43440134432 is an apocalyptic number.

It is an amenable number.

43440134432 is a deficient number, since it is larger than the sum of its proper divisors (42082630294).

43440134432 is a wasteful number, since it uses less digits than its factorization.

43440134432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357504211 (or 1357504203 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 43440134432 its reverse (23443104434), we get a palindrome (66883238866).

The spelling of 43440134432 in words is "forty-three billion, four hundred forty million, one hundred thirty-four thousand, four hundred thirty-two".