11664631426168 has 32 divisors (see below), whose sum is σ = 24995761279200. Its totient is φ = 4999103252352.

The previous prime is 11664631426109. The next prime is 11664631426199. The reversal of 11664631426168 is 86162413646611.

It is a happy number.

It is a super-2 number, since 2×11664631426168² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 15413338 + ... + 16152406.

It is an arithmetic number, because the mean of its divisors is an integer number (781117539975).

Almost surely, 2^{11664631426168} is an apocalyptic number.

It is an amenable number.

11664631426168 is an abundant number, since it is smaller than the sum of its proper divisors (13331129853032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11664631426168 is a wasteful number, since it uses less digits than its factorization.

11664631426168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020919 (or 1020915 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The spelling of 11664631426168 in words is "eleven trillion, six hundred sixty-four billion, six hundred thirty-one million, four hundred twenty-six thousand, one hundred sixty-eight".