43440020343 has 6 divisors (see below), whose sum is σ = 62746696064. Its totient is φ = 28960013556.

The previous prime is 43440020291. The next prime is 43440020347. The reversal of 43440020343 is 34302004434.

It is not a de Polignac number, because 43440020343 - 2¹⁶ = 43439954807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43440020347) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2413334455 + ... + 2413334472.

Almost surely, 2^43440020343 is an apocalyptic number.

43440020343 is a deficient number, since it is larger than the sum of its proper divisors (19306675721).

43440020343 is a wasteful number, since it uses less digits than its factorization.

43440020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826668933 (or 4826668930 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 43440020343 its reverse (34302004434), we get a palindrome (77742024777).

The spelling of 43440020343 in words is "forty-three billion, four hundred forty million, twenty thousand, three hundred forty-three".