6641531396 has 48 divisors (see below), whose sum is σ = 12713971200. Its totient is φ = 3023661312.

The previous prime is 6641531363. The next prime is 6641531431. The reversal of 6641531396 is 6931351466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484736 + ... + 498248.

It is an arithmetic number, because the mean of its divisors is an integer number (264874400).

Almost surely, 2^6641531396 is an apocalyptic number.

It is an amenable number.

6641531396 is a deficient number, since it is larger than the sum of its proper divisors (6072439804).

6641531396 is a wasteful number, since it uses less digits than its factorization.

6641531396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788 (or 13786 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 6641531396 is about 81495.5912672581. The cubic root of 6641531396 is about 1879.7037593432.

The spelling of 6641531396 in words is "six billion, six hundred forty-one million, five hundred thirty-one thousand, three hundred ninety-six".