8464643216 has 20 divisors (see below), whose sum is σ = 16410376752. Its totient is φ = 4229707296.

The previous prime is 8464643191. The next prime is 8464643219. The reversal of 8464643216 is 6123464648.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8464643219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136550 + ... + 188613.

Almost surely, 2^8464643216 is an apocalyptic number.

It is an amenable number.

8464643216 is a deficient number, since it is larger than the sum of its proper divisors (7945733536).

8464643216 is a wasteful number, since it uses less digits than its factorization.

8464643216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326798 (or 326792 counting only the distinct ones).

The product of its digits is 663552, while the sum is 44.

The square root of 8464643216 is about 92003.4956727189. The cubic root of 8464643216 is about 2037.9939282336.

The spelling of 8464643216 in words is "eight billion, four hundred sixty-four million, six hundred forty-three thousand, two hundred sixteen".