6689164594464 has 120 divisors (see below), whose sum is σ = 21461069832048. Its totient is φ = 2027019565440.

The previous prime is 6689164594447. The next prime is 6689164594499. The reversal of 6689164594464 is 4644954619866.

6689164594464 is a `hidden beast` number, since 6 + 68 + 9 + 16 + 4 + 5 + 94 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 6689164594392 and 6689164594401.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117275862 + ... + 117332885.

Almost surely, 2^{6689164594464} is an apocalyptic number.

It is an amenable number.

6689164594464 is an abundant number, since it is smaller than the sum of its proper divisors (14771905237584).

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

6689164594464 is a wasteful number, since it uses less digits than its factorization.

6689164594464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234608780 (or 234608763 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 72.

The spelling of 6689164594464 in words is "six trillion, six hundred eighty-nine billion, one hundred sixty-four million, five hundred ninety-four thousand, four hundred sixty-four".