5665561049975 has 24 divisors (see below), whose sum is σ = 7031509442688. Its totient is φ = 4528441663200.

The previous prime is 5665561049921. The next prime is 5665561049989. The reversal of 5665561049975 is 5799401655665.

It is not a de Polignac number, because 5665561049975 - 2²⁶ = 5665493941111 is a prime.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153324452 + ... + 153361398.

It is an arithmetic number, because the mean of its divisors is an integer number (292979560112).

Almost surely, 2^{5665561049975} is an apocalyptic number.

5665561049975 is a deficient number, since it is larger than the sum of its proper divisors (1365948392713).

5665561049975 is a wasteful number, since it uses less digits than its factorization.

5665561049975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42215 (or 42210 counting only the distinct ones).

The product of its (nonzero) digits is 306180000, while the sum is 68.

The spelling of 5665561049975 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, forty-nine thousand, nine hundred seventy-five".