43243532440 has 32 divisors (see below), whose sum is σ = 99927625680. Its totient is φ = 16829914752.

The previous prime is 43243532411. The next prime is 43243532459. The reversal of 43243532440 is 4423534234.

It is a junction number, because it is equal to n+sod(n) for n = 43243532396 and 43243532405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14607822 + ... + 14610781.

Almost surely, 2^43243532440 is an apocalyptic number.

43243532440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43243532440 is an abundant number, since it is smaller than the sum of its proper divisors (56684093240).

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

43243532440 is a wasteful number, since it uses less digits than its factorization.

43243532440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29218651 (or 29218647 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 34.

The spelling of 43243532440 in words is "forty-three billion, two hundred forty-three million, five hundred thirty-two thousand, four hundred forty".