43145407643 has 16 divisors (see below), whose sum is σ = 46702177536. Its totient is φ = 39623091840.

The previous prime is 43145407631. The next prime is 43145407673. The reversal of 43145407643 is 34670454134.

It is a happy number.

43145407643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43145407643 - 2⁸ = 43145407387 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 43145407643.

It is not an unprimeable number, because it can be changed into a prime (43145407673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2302733 + ... + 2321393.

It is an arithmetic number, because the mean of its divisors is an integer number (2918886096).

Almost surely, 2^43145407643 is an apocalyptic number.

43145407643 is a deficient number, since it is larger than the sum of its proper divisors (3556769893).

43145407643 is a wasteful number, since it uses less digits than its factorization.

43145407643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19574.

The product of its (nonzero) digits is 483840, while the sum is 41.

The spelling of 43145407643 in words is "forty-three billion, one hundred forty-five million, four hundred seven thousand, six hundred forty-three".