73173436689 has 4 divisors (see below), whose sum is σ = 97564582256. Its totient is φ = 48782291124.

The previous prime is 73173436667. The next prime is 73173436691. The reversal of 73173436689 is 98663437137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 73173436689 - 2¹⁶ = 73173371153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73173436619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12195572779 + ... + 12195572784.

It is an arithmetic number, because the mean of its divisors is an integer number (24391145564).

Almost surely, 2^73173436689 is an apocalyptic number.

It is an amenable number.

73173436689 is a deficient number, since it is larger than the sum of its proper divisors (24391145567).

73173436689 is a wasteful number, since it uses less digits than its factorization.

73173436689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24391145566.

The product of its digits is 13716864, while the sum is 57.

The spelling of 73173436689 in words is "seventy-three billion, one hundred seventy-three million, four hundred thirty-six thousand, six hundred eighty-nine".