5665561049967 has 64 divisors (see below), whose sum is σ = 9311179637760. Its totient is φ = 2983980155904.

The previous prime is 5665561049921. The next prime is 5665561049989. The reversal of 5665561049967 is 7699401655665.

It is not a de Polignac number, because 5665561049967 - 2⁷ = 5665561049839 is a prime.

It is a super-3 number, since 3×5665561049967³ (a number of 39 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665561029967) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 566041659 + ... + 566051667.

It is an arithmetic number, because the mean of its divisors is an integer number (145487181840).

Almost surely, 2^{5665561049967} is an apocalyptic number.

5665561049967 is a deficient number, since it is larger than the sum of its proper divisors (3645618587793).

5665561049967 is a wasteful number, since it uses less digits than its factorization.

5665561049967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12912.

The product of its (nonzero) digits is 367416000, while the sum is 69.

The spelling of 5665561049967 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, forty-nine thousand, nine hundred sixty-seven".