8163664663618 has 8 divisors (see below), whose sum is σ = 12272059897020. Its totient is φ = 4072978031280.

The previous prime is 8163664663571. The next prime is 8163664663619.

8163664663618 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7692762657889 + 470902005729 = 2773583^2 + 686223^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 8163664663618.

It is not an unprimeable number, because it can be changed into a prime (8163664663619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4427149113 + ... + 4427150956.

Almost surely, 2^{8163664663618} is an apocalyptic number.

8163664663618 is a deficient number, since it is larger than the sum of its proper divisors (4108395233402).

8163664663618 is a wasteful number, since it uses less digits than its factorization.

8163664663618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854300532.

The product of its digits is 107495424, while the sum is 64.

The spelling of 8163664663618 in words is "eight trillion, one hundred sixty-three billion, six hundred sixty-four million, six hundred sixty-three thousand, six hundred eighteen".