6641333644 has 48 divisors (see below), whose sum is σ = 13507159680. Its totient is φ = 2825418240.

The previous prime is 6641333603. The next prime is 6641333669. The reversal of 6641333644 is 4463331466.

It is a junction number, because it is equal to n+sod(n) for n = 6641333597 and 6641333606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21532 + ... + 117244.

It is an arithmetic number, because the mean of its divisors is an integer number (281399160).

Almost surely, 2^6641333644 is an apocalyptic number.

It is an amenable number.

6641333644 is an abundant number, since it is smaller than the sum of its proper divisors (6865826036).

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

6641333644 is a wasteful number, since it uses less digits than its factorization.

6641333644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95830 (or 95828 counting only the distinct ones).

The product of its digits is 373248, while the sum is 40.

The square root of 6641333644 is about 81494.3779901411. The cubic root of 6641333644 is about 1879.6851030602.

The spelling of 6641333644 in words is "six billion, six hundred forty-one million, three hundred thirty-three thousand, six hundred forty-four".