6641442505 has 8 divisors (see below), whose sum is σ = 7990761600. Its totient is φ = 5299133616.

The previous prime is 6641442499. The next prime is 6641442553. The reversal of 6641442505 is 5052441466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6641442505 - 2³ = 6641442497 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1750465 + ... + 1754254.

It is an arithmetic number, because the mean of its divisors is an integer number (998845200).

Almost surely, 2^6641442505 is an apocalyptic number.

It is an amenable number.

6641442505 is a deficient number, since it is larger than the sum of its proper divisors (1349319095).

6641442505 is a wasteful number, since it uses less digits than its factorization.

6641442505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505103.

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 6641442505 is about 81495.0458923731. The cubic root of 6641442505 is about 1879.6953732506.

The spelling of 6641442505 in words is "six billion, six hundred forty-one million, four hundred forty-two thousand, five hundred five".