6646191896832 has 36 divisors (see below), whose sum is σ = 17688562810800. Its totient is φ = 2215397298688.

The previous prime is 6646191896831. The next prime is 6646191896833. The reversal of 6646191896832 is 2386981916466.

It is an interprime number because it is at equal distance from previous prime (6646191896831) and next prime (6646191896833).

It is not an unprimeable number, because it can be changed into a prime (6646191896831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326947082 + ... + 4326948617.

Almost surely, 2^{6646191896832} is an apocalyptic number.

It is an amenable number.

6646191896832 is an abundant number, since it is smaller than the sum of its proper divisors (11042370913968).

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

6646191896832 is an equidigital number, since it uses as much as digits as its factorization.

6646191896832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8653895718 (or 8653895704 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 69.

The spelling of 6646191896832 in words is "six trillion, six hundred forty-six billion, one hundred ninety-one million, eight hundred ninety-six thousand, eight hundred thirty-two".