43440128707 has 4 divisors (see below), whose sum is σ = 43450840216. Its totient is φ = 43429417200.

The previous prime is 43440128701. The next prime is 43440128723. The reversal of 43440128707 is 70782104434.

43440128707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43440128707 - 2⁷ = 43440128579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43440128707.

It is not an unprimeable number, because it can be changed into a prime (43440128701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5349669 + ... + 5357782.

It is an arithmetic number, because the mean of its divisors is an integer number (10862710054).

Almost surely, 2^43440128707 is an apocalyptic number.

43440128707 is a deficient number, since it is larger than the sum of its proper divisors (10711509).

43440128707 is a wasteful number, since it uses less digits than its factorization.

43440128707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10711508.

The product of its (nonzero) digits is 150528, while the sum is 40.

The spelling of 43440128707 in words is "forty-three billion, four hundred forty million, one hundred twenty-eight thousand, seven hundred seven".