168488566663 has 4 divisors (see below), whose sum is σ = 168974124840. Its totient is φ = 168003008488.

The previous prime is 168488566621. The next prime is 168488566747. The reversal of 168488566663 is 366665884861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366665884861 = 11071 ⋅33119491.

It is a cyclic number.

It is not a de Polignac number, because 168488566663 - 2¹³ = 168488558471 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168488566163) 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, 242778568 + ... + 242779261.

It is an arithmetic number, because the mean of its divisors is an integer number (42243531210).

Almost surely, 2^168488566663 is an apocalyptic number.

168488566663 is a deficient number, since it is larger than the sum of its proper divisors (485558177).

168488566663 is an equidigital number, since it uses as much as digits as its factorization.

168488566663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485558176.

The product of its digits is 238878720, while the sum is 67.

The spelling of 168488566663 in words is "one hundred sixty-eight billion, four hundred eighty-eight million, five hundred sixty-six thousand, six hundred sixty-three".