43545910943 has 2 divisors, whose sum is σ = 43545910944. Its totient is φ = 43545910942.

The previous prime is 43545910939. The next prime is 43545910987. The reversal of 43545910943 is 34901954534.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43545910943 - 2² = 43545910939 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43545910543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21772955471 + 21772955472.

It is an arithmetic number, because the mean of its divisors is an integer number (21772955472).

Almost surely, 2^43545910943 is an apocalyptic number.

43545910943 is a deficient number, since it is larger than the sum of its proper divisors (1).

43545910943 is an equidigital number, since it uses as much as digits as its factorization.

43545910943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 43545910943 in words is "forty-three billion, five hundred forty-five million, nine hundred ten thousand, nine hundred forty-three".