662116317173 has 4 divisors (see below), whose sum is σ = 662702780940. Its totient is φ = 661529853408.

The previous prime is 662116317143. The next prime is 662116317179. The reversal of 662116317173 is 371713611266.

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 17848425604 + 644267891569 = 133598^2 + 802663^2 .

It is a cyclic number.

It is not a de Polignac number, because 662116317173 - 2²⁰ = 662115268597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662116317179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293230190 + ... + 293232447.

It is an arithmetic number, because the mean of its divisors is an integer number (165675695235).

Almost surely, 2^662116317173 is an apocalyptic number.

It is an amenable number.

662116317173 is a deficient number, since it is larger than the sum of its proper divisors (586463767).

662116317173 is a wasteful number, since it uses less digits than its factorization.

662116317173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586463766.

The product of its digits is 190512, while the sum is 44.

The spelling of 662116317173 in words is "six hundred sixty-two billion, one hundred sixteen million, three hundred seventeen thousand, one hundred seventy-three".