168261166727 has 8 divisors (see below), whose sum is σ = 172844167056. Its totient is φ = 163708618752.

The previous prime is 168261166709. The next prime is 168261166729. The reversal of 168261166727 is 727661162861.

168261166727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 168261166727 - 2¹² = 168261162631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168261166729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7601888 + ... + 7623989.

It is an arithmetic number, because the mean of its divisors is an integer number (21605520882).

Almost surely, 2^168261166727 is an apocalyptic number.

168261166727 is a deficient number, since it is larger than the sum of its proper divisors (4583000329).

168261166727 is a wasteful number, since it uses less digits than its factorization.

168261166727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15226177.

The product of its digits is 2032128, while the sum is 53.

The spelling of 168261166727 in words is "one hundred sixty-eight billion, two hundred sixty-one million, one hundred sixty-six thousand, seven hundred twenty-seven".