43556430440 has 16 divisors (see below), whose sum is σ = 98001968580. Its totient is φ = 17422572160.

The previous prime is 43556430431. The next prime is 43556430469. The reversal of 43556430440 is 4403465534.

It can be written as a sum of positive squares in 2 ways, for example, as 41655993604 + 1900436836 = 204098^2 + 43594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43556430394 and 43556430403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544455341 + ... + 544455420.

Almost surely, 2^43556430440 is an apocalyptic number.

43556430440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43556430440 is an abundant number, since it is smaller than the sum of its proper divisors (54445538140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43556430440 is a wasteful number, since it uses less digits than its factorization.

43556430440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088910772 (or 1088910768 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 43556430440 its reverse (4403465534), we get a palindrome (47959895974).

The spelling of 43556430440 in words is "forty-three billion, five hundred fifty-six million, four hundred thirty thousand, four hundred forty".