168517668361 has 6 divisors (see below), whose sum is σ = 196030757130. Its totient is φ = 144443715696.

The previous prime is 168517668331. The next prime is 168517668367. The reversal of 168517668361 is 163866715861.

It can be written as a sum of positive squares in only one way, i.e., 124073017600 + 44444650761 = 352240^2 + 210819^2 .

It is not a de Polignac number, because 168517668361 - 2⁵ = 168517668329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168517668296 and 168517668305.

It is not an unprimeable number, because it can be changed into a prime (168517668367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1719567996 + ... + 1719568093.

It is an arithmetic number, because the mean of its divisors is an integer number (32671792855).

Almost surely, 2^168517668361 is an apocalyptic number.

It is an amenable number.

168517668361 is a deficient number, since it is larger than the sum of its proper divisors (27513088769).

168517668361 is an equidigital number, since it uses as much as digits as its factorization.

168517668361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439136103 (or 3439136096 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The spelling of 168517668361 in words is "one hundred sixty-eight billion, five hundred seventeen million, six hundred sixty-eight thousand, three hundred sixty-one".