43454345540543 has 16 divisors (see below), whose sum is σ = 51306029715456. Its totient is φ = 36015606357120.

The previous prime is 43454345540527. The next prime is 43454345540647. The reversal of 43454345540543 is 34504554345434.

It is a cyclic number.

It is not a de Polignac number, because 43454345540543 - 2⁴ = 43454345540527 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 (43454345540503) 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, 81603146 + ... + 82133927.

It is an arithmetic number, because the mean of its divisors is an integer number (3206626857216).

Almost surely, 2^{43454345540543} is an apocalyptic number.

43454345540543 is a deficient number, since it is larger than the sum of its proper divisors (7851684174913).

43454345540543 is a wasteful number, since it uses less digits than its factorization.

43454345540543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163738334.

The product of its (nonzero) digits is 69120000, while the sum is 53.

Adding to 43454345540543 its reverse (34504554345434), we get a palindrome (77958899885977).

The spelling of 43454345540543 in words is "forty-three trillion, four hundred fifty-four billion, three hundred forty-five million, five hundred forty thousand, five hundred forty-three".