8665811313121 has 8 divisors (see below), whose sum is σ = 8688740929344. Its totient is φ = 8642909476080.

The previous prime is 8665811313119. The next prime is 8665811313151. The reversal of 8665811313121 is 1213131185668.

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 8665811313121 - 2¹ = 8665811313119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8665811313151) 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, 6319990 + ... + 7567951.

It is an arithmetic number, because the mean of its divisors is an integer number (1086092616168).

Almost surely, 2^{8665811313121} is an apocalyptic number.

It is an amenable number.

8665811313121 is a deficient number, since it is larger than the sum of its proper divisors (22929616223).

8665811313121 is a wasteful number, since it uses less digits than its factorization.

8665811313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13889591.

The product of its digits is 207360, while the sum is 46.

Adding to 8665811313121 its reverse (1213131185668), we get a palindrome (9878942498789).

The spelling of 8665811313121 in words is "eight trillion, six hundred sixty-five billion, eight hundred eleven million, three hundred thirteen thousand, one hundred twenty-one".