8646432172 has 96 divisors (see below), whose sum is σ = 18101619200. Its totient is φ = 3536898048.

The previous prime is 8646432167. The next prime is 8646432173. The reversal of 8646432172 is 2712346468.

It is not an unprimeable number, because it can be changed into a prime (8646432173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13968079 + ... + 13968697.

Almost surely, 2^8646432172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8646432172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9050809600).

8646432172 is an abundant number, since it is smaller than the sum of its proper divisors (9455187028).

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

8646432172 is a wasteful number, since it uses less digits than its factorization.

8646432172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 901 counting only the distinct ones).

The product of its digits is 387072, while the sum is 43.

The square root of 8646432172 is about 92986.1934482749. The cubic root of 8646432172 is about 2052.4802161562.

The spelling of 8646432172 in words is "eight billion, six hundred forty-six million, four hundred thirty-two thousand, one hundred seventy-two".