168795381549 has 8 divisors (see below), whose sum is σ = 226703286720. Its totient is φ = 111708865376.

The previous prime is 168795381509. The next prime is 168795381563. The reversal of 168795381549 is 945183597861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168795381549 - 2¹⁶ = 168795316013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168795381549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168795381509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205346769 + ... + 205347590.

It is an arithmetic number, because the mean of its divisors is an integer number (28337910840).

Almost surely, 2^168795381549 is an apocalyptic number.

It is an amenable number.

168795381549 is a deficient number, since it is larger than the sum of its proper divisors (57907905171).

168795381549 is a wasteful number, since it uses less digits than its factorization.

168795381549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410694499.

The product of its digits is 65318400, while the sum is 66.

The spelling of 168795381549 in words is "one hundred sixty-eight billion, seven hundred ninety-five million, three hundred eighty-one thousand, five hundred forty-nine".