6643042245 has 48 divisors (see below), whose sum is σ = 13197475200. Its totient is φ = 3028067712.

The previous prime is 6643042243. The next prime is 6643042277. The reversal of 6643042245 is 5422403466.

6643042245 is a `hidden beast` number, since 6 + 643 + 0 + 4 + 2 + 2 + 4 + 5 = 666.

6643042245 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6643042245 - 2¹ = 6643042243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643042243) 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 47 ways as a sum of consecutive naturals, for example, 79722 + ... + 140148.

It is an arithmetic number, because the mean of its divisors is an integer number (274947400).

Almost surely, 2^6643042245 is an apocalyptic number.

It is an amenable number.

6643042245 is a deficient number, since it is larger than the sum of its proper divisors (6554432955).

6643042245 is a wasteful number, since it uses less digits than its factorization.

6643042245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60794 (or 60791 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 6643042245 is about 81504.8602538523. The cubic root of 6643042245 is about 1879.8462833614.

The spelling of 6643042245 in words is "six billion, six hundred forty-three million, forty-two thousand, two hundred forty-five".