5665561610645 has 8 divisors (see below), whose sum is σ = 6884733096960. Its totient is φ = 4475076512400.

The previous prime is 5665561610573. The next prime is 5665561610669. The reversal of 5665561610645 is 5460161655665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5665561610645 - 2⁸ = 5665561610389 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7171596581 + ... + 7171597370.

It is an arithmetic number, because the mean of its divisors is an integer number (860591637120).

Almost surely, 2^{5665561610645} is an apocalyptic number.

It is an amenable number.

5665561610645 is a deficient number, since it is larger than the sum of its proper divisors (1219171486315).

5665561610645 is a wasteful number, since it uses less digits than its factorization.

5665561610645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14343194035.

The product of its (nonzero) digits is 19440000, while the sum is 56.

The spelling of 5665561610645 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, six hundred ten thousand, six hundred forty-five".