6664356384432 has 20 divisors (see below), whose sum is σ = 17216253993240. Its totient is φ = 2221452128128.

The previous prime is 6664356384421. The next prime is 6664356384437. The reversal of 6664356384432 is 2344836534666.

It is not an unprimeable number, because it can be changed into a prime (6664356384437) 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, 69420378957 + ... + 69420379052.

It is an arithmetic number, because the mean of its divisors is an integer number (860812699662).

Almost surely, 2^{6664356384432} is an apocalyptic number.

It is an amenable number.

6664356384432 is an abundant number, since it is smaller than the sum of its proper divisors (10551897608808).

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

6664356384432 is a wasteful number, since it uses less digits than its factorization.

6664356384432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138840758020 (or 138840758014 counting only the distinct ones).

The product of its digits is 179159040, while the sum is 60.

The spelling of 6664356384432 in words is "six trillion, six hundred sixty-four billion, three hundred fifty-six million, three hundred eighty-four thousand, four hundred thirty-two".