6643345704611 has 16 divisors (see below), whose sum is σ = 8286997662720. Its totient is φ = 5173892494080.

The previous prime is 6643345704577. The next prime is 6643345704629. The reversal of 6643345704611 is 1164075433466.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6643345704611 is a prime.

It is a super-2 number, since 2×6643345704611² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6643345704611.

It is not an unprimeable number, because it can be changed into a prime (6643345704211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22691291 + ... + 22982196.

It is an arithmetic number, because the mean of its divisors is an integer number (517937353920).

Almost surely, 2^{6643345704611} is an apocalyptic number.

6643345704611 is a deficient number, since it is larger than the sum of its proper divisors (1643651958109).

6643345704611 is a wasteful number, since it uses less digits than its factorization.

6643345704611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45675394.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 6643345704611 in words is "six trillion, six hundred forty-three billion, three hundred forty-five million, seven hundred four thousand, six hundred eleven".