6641298965 has 16 divisors (see below), whose sum is σ = 9643836672. Its totient is φ = 4286148864.

The previous prime is 6641298913. The next prime is 6641298973. The reversal of 6641298965 is 5698921466.

It is a cyclic number.

It is not a de Polignac number, because 6641298965 - 2¹⁰ = 6641297941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6641298965.

It is a congruent number.

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, 5580329 + ... + 5581518.

It is an arithmetic number, because the mean of its divisors is an integer number (602739792).

Almost surely, 2^6641298965 is an apocalyptic number.

It is an amenable number.

6641298965 is a deficient number, since it is larger than the sum of its proper divisors (3002537707).

6641298965 is a wasteful number, since it uses less digits than its factorization.

6641298965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161876.

The product of its digits is 5598720, while the sum is 56.

The square root of 6641298965 is about 81494.1652205850. The cubic root of 6641298965 is about 1879.6818313422.

The spelling of 6641298965 in words is "six billion, six hundred forty-one million, two hundred ninety-eight thousand, nine hundred sixty-five".