5643641611 has 8 divisors (see below), whose sum is σ = 5998353920. Its totient is φ = 5294697192.

The previous prime is 5643641609. The next prime is 5643641617. The reversal of 5643641611 is 1161463465.

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 5643641611 - 2¹ = 5643641609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5643641617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1439955 + ... + 1443868.

It is an arithmetic number, because the mean of its divisors is an integer number (749794240).

Almost surely, 2^5643641611 is an apocalyptic number.

5643641611 is a deficient number, since it is larger than the sum of its proper divisors (354712309).

5643641611 is a wasteful number, since it uses less digits than its factorization.

5643641611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883945.

The product of its digits is 51840, while the sum is 37.

The square root of 5643641611 is about 75124.1746111064. The cubic root of 5643641611 is about 1780.4091147109.

The spelling of 5643641611 in words is "five billion, six hundred forty-three million, six hundred forty-one thousand, six hundred eleven".