73573443065 has 4 divisors (see below), whose sum is σ = 88288131684. Its totient is φ = 58858754448.

The previous prime is 73573443049. The next prime is 73573443079. The reversal of 73573443065 is 56034437537.

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 45455519209 + 28117923856 = 213203^2 + 167684^2 .

It is a cyclic number.

It is not a de Polignac number, because 73573443065 - 2⁴ = 73573443049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 7357344302 + ... + 7357344311.

It is an arithmetic number, because the mean of its divisors is an integer number (22072032921).

Almost surely, 2^73573443065 is an apocalyptic number.

It is an amenable number.

73573443065 is a deficient number, since it is larger than the sum of its proper divisors (14714688619).

73573443065 is a wasteful number, since it uses less digits than its factorization.

73573443065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14714688618.

The product of its (nonzero) digits is 3175200, while the sum is 47.

The spelling of 73573443065 in words is "seventy-three billion, five hundred seventy-three million, four hundred forty-three thousand, sixty-five".