5643539121 has 8 divisors (see below), whose sum is σ = 8208784224. Its totient is φ = 3420326720.

The previous prime is 5643539117. The next prime is 5643539129. The reversal of 5643539121 is 1219353465.

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 5643539121 - 2² = 5643539117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5643539121.

It is not an unprimeable number, because it can be changed into a prime (5643539129) 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, 85508136 + ... + 85508201.

It is an arithmetic number, because the mean of its divisors is an integer number (1026098028).

Almost surely, 2^5643539121 is an apocalyptic number.

It is an amenable number.

5643539121 is a deficient number, since it is larger than the sum of its proper divisors (2565245103).

5643539121 is a wasteful number, since it uses less digits than its factorization.

5643539121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171016351.

The product of its digits is 97200, while the sum is 39.

The square root of 5643539121 is about 75123.4924707312. The cubic root of 5643539121 is about 1780.3983370814.

The spelling of 5643539121 in words is "five billion, six hundred forty-three million, five hundred thirty-nine thousand, one hundred twenty-one".