5731636643 has 8 divisors (see below), whose sum is σ = 5750727168. Its totient is φ = 5712562944.

The previous prime is 5731636621. The next prime is 5731636693. The reversal of 5731636643 is 3466361375.

It is a happy number.

5731636643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5731636643 - 2²² = 5727442339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5731636594 and 5731636603.

It is not an unprimeable number, because it can be changed into a prime (5731636693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1398305 + ... + 1402397.

It is an arithmetic number, because the mean of its divisors is an integer number (718840896).

Almost surely, 2^5731636643 is an apocalyptic number.

5731636643 is a deficient number, since it is larger than the sum of its proper divisors (19090525).

5731636643 is a wasteful number, since it uses less digits than its factorization.

5731636643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413.

The product of its digits is 816480, while the sum is 44.

The square root of 5731636643 is about 75707.5732209136. The cubic root of 5731636643 is about 1789.6147484003.

The spelling of 5731636643 in words is "five billion, seven hundred thirty-one million, six hundred thirty-six thousand, six hundred forty-three".