6466995328 has 16 divisors (see below), whose sum is σ = 12883467510. Its totient is φ = 3233497600.

The previous prime is 6466995247. The next prime is 6466995329. The reversal of 6466995328 is 8235996646.

It can be written as a sum of positive squares in only one way, i.e., 6309442624 + 157552704 = 79432^2 + 12552^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (6466995329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25261573 + ... + 25261828.

Almost surely, 2^6466995328 is an apocalyptic number.

It is an amenable number.

6466995328 is a deficient number, since it is larger than the sum of its proper divisors (6416472182).

6466995328 is an equidigital number, since it uses as much as digits as its factorization.

6466995328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50523415 (or 50523403 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 58.

The square root of 6466995328 is about 80417.6307037207. The cubic root of 6466995328 is about 1863.0914911763.

The spelling of 6466995328 in words is "six billion, four hundred sixty-six million, nine hundred ninety-five thousand, three hundred twenty-eight".