6643042340229 has 12 divisors (see below), whose sum is σ = 9654373737216. Its totient is φ = 4401524985192.

The previous prime is 6643042340173. The next prime is 6643042340237. The reversal of 6643042340229 is 9220432403466.

6643042340229 is a `hidden beast` number, since 6 + 6 + 43 + 0 + 42 + 340 + 229 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-6643042340229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6643042340329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2264157477 + ... + 2264160410.

It is an arithmetic number, because the mean of its divisors is an integer number (804531144768).

Almost surely, 2^{6643042340229} is an apocalyptic number.

It is an amenable number.

6643042340229 is a deficient number, since it is larger than the sum of its proper divisors (3011331396987).

6643042340229 is a wasteful number, since it uses less digits than its factorization.

6643042340229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528318056 (or 4528318053 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 6643042340229 in words is "six trillion, six hundred forty-three billion, forty-two million, three hundred forty thousand, two hundred twenty-nine".