43318890473 has 4 divisors (see below), whose sum is σ = 43320229188. Its totient is φ = 43317551760.

The previous prime is 43318890467. The next prime is 43318890481. The reversal of 43318890473 is 37409881334.

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 34893119209 + 8425771264 = 186797^2 + 91792^2 .

It is a cyclic number.

It is not a de Polignac number, because 43318890473 - 2¹⁴ = 43318874089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43318820473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619586 + ... + 685947.

It is an arithmetic number, because the mean of its divisors is an integer number (10830057297).

Almost surely, 2^43318890473 is an apocalyptic number.

It is an amenable number.

43318890473 is a deficient number, since it is larger than the sum of its proper divisors (1338715).

43318890473 is a wasteful number, since it uses less digits than its factorization.

43318890473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338714.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 43318890473 in words is "forty-three billion, three hundred eighteen million, eight hundred ninety thousand, four hundred seventy-three".