73207239809 has 16 divisors (see below), whose sum is σ = 81746012160. Its totient is φ = 64988798160.

The previous prime is 73207239779. The next prime is 73207239811. The reversal of 73207239809 is 90893270237.

It is not a de Polignac number, because 73207239809 - 2¹² = 73207235713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73207239829) 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 15 ways as a sum of consecutive naturals, for example, 69212 + ... + 388850.

It is an arithmetic number, because the mean of its divisors is an integer number (5109125760).

Almost surely, 2^73207239809 is an apocalyptic number.

It is an amenable number.

73207239809 is a deficient number, since it is larger than the sum of its proper divisors (8538772351).

73207239809 is a wasteful number, since it uses less digits than its factorization.

73207239809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320140.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 73207239809 in words is "seventy-three billion, two hundred seven million, two hundred thirty-nine thousand, eight hundred nine".