43043553145 has 4 divisors (see below), whose sum is σ = 51652263780. Its totient is φ = 34434842512.

The previous prime is 43043553131. The next prime is 43043553167. The reversal of 43043553145 is 54135534034.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21820016656 + 21223536489 = 147716^2 + 145683^2 .

It is a cyclic number.

It is not a de Polignac number, because 43043553145 - 2⁷ = 43043553017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4304355310 + ... + 4304355319.

It is an arithmetic number, because the mean of its divisors is an integer number (12913065945).

Almost surely, 2^43043553145 is an apocalyptic number.

It is an amenable number.

43043553145 is a deficient number, since it is larger than the sum of its proper divisors (8608710635).

43043553145 is an equidigital number, since it uses as much as digits as its factorization.

43043553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8608710634.

The product of its (nonzero) digits is 216000, while the sum is 37.

The spelling of 43043553145 in words is "forty-three billion, forty-three million, five hundred fifty-three thousand, one hundred forty-five".