5641648985 has 16 divisors (see below), whose sum is σ = 8192244096. Its totient is φ = 3640996608.

The previous prime is 5641648979. The next prime is 5641649099. The reversal of 5641648985 is 5898461465.

It is a cyclic number.

It is not a de Polignac number, because 5641648985 - 2²⁸ = 5373213529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5641648985.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4740287 + ... + 4741476.

It is an arithmetic number, because the mean of its divisors is an integer number (512015256).

Almost surely, 2^5641648985 is an apocalyptic number.

It is an amenable number.

5641648985 is a deficient number, since it is larger than the sum of its proper divisors (2550595111).

5641648985 is a wasteful number, since it uses less digits than its factorization.

5641648985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9481792.

The product of its digits is 8294400, while the sum is 56.

The square root of 5641648985 is about 75110.9112246683. The cubic root of 5641648985 is about 1780.1995510194.

The spelling of 5641648985 in words is "five billion, six hundred forty-one million, six hundred forty-eight thousand, nine hundred eighty-five".