168713098009 has 3 divisors (see below), whose sum is σ = 168713508757. Its totient is φ = 168712687262.

The previous prime is 168713097997. The next prime is 168713098019. The reversal of 168713098009 is 900890317861.

It is a happy number.

The square root of 168713098009 is 410747.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 900890317861 = 214259 ⋅4204679.

It is a de Polignac number, because none of the positive numbers 2^k-168713098009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168713098019) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 205374 + ... + 616120.

Almost surely, 2^168713098009 is an apocalyptic number.

168713098009 is the 410747-th square number.

168713098009 is the 205374-th centered octagonal number.

It is an amenable number.

168713098009 is a deficient number, since it is larger than the sum of its proper divisors (410748).

168713098009 is an frugal number, since it uses more digits than its factorization.

168713098009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821494 (or 410747 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 168713098009 in words is "one hundred sixty-eight billion, seven hundred thirteen million, ninety-eight thousand, nine".