8664821232372 has 36 divisors (see below), whose sum is σ = 21903757932420. Its totient is φ = 2888139848832.

The previous prime is 8664821232359. The next prime is 8664821232373. The reversal of 8664821232372 is 2732321284668.

8664821232372 is a `hidden beast` number, since 8 + 6 + 6 + 482 + 123 + 2 + 37 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4934955618576 + 3729865613796 = 2221476^2 + 1931286^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8664821232373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4790097 + ... + 6346232.

It is an arithmetic number, because the mean of its divisors is an integer number (608437720345).

Almost surely, 2^{8664821232372} is an apocalyptic number.

It is an amenable number.

8664821232372 is an abundant number, since it is smaller than the sum of its proper divisors (13238936700048).

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

8664821232372 is a wasteful number, since it uses less digits than its factorization.

8664821232372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157952 (or 11157947 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The spelling of 8664821232372 in words is "eight trillion, six hundred sixty-four billion, eight hundred twenty-one million, two hundred thirty-two thousand, three hundred seventy-two".