5664988894665 has 64 divisors (see below), whose sum is σ = 9125731952640. Its totient is φ = 3000828149760.

The previous prime is 5664988894639. The next prime is 5664988894679.

5664988894665 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-5664988894665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2714416252 + ... + 2714418338.

It is an arithmetic number, because the mean of its divisors is an integer number (142589561760).

Almost surely, 2^{5664988894665} is an apocalyptic number.

It is an amenable number.

5664988894665 is a deficient number, since it is larger than the sum of its proper divisors (3460743057975).

5664988894665 is a wasteful number, since it uses less digits than its factorization.

5664988894665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062.

The product of its digits is 21499084800, while the sum is 84.

The spelling of 5664988894665 in words is "five trillion, six hundred sixty-four billion, nine hundred eighty-eight million, eight hundred ninety-four thousand, six hundred sixty-five".