5665566001671 has 12 divisors (see below), whose sum is σ = 8184133963200. Its totient is φ = 3776795403840.

The previous prime is 5665566001649. The next prime is 5665566001699. The reversal of 5665566001671 is 1761006655665.

5665566001671 is a `hidden beast` number, since 5 + 6 + 6 + 5 + 566 + 0 + 0 + 1 + 6 + 71 = 666.

5665566001671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5665566001671 - 2¹⁸ = 5665565739527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665566000671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20572050 + ... + 20845631.

It is an arithmetic number, because the mean of its divisors is an integer number (682011163600).

Almost surely, 2^{5665566001671} is an apocalyptic number.

5665566001671 is a deficient number, since it is larger than the sum of its proper divisors (2518567961529).

5665566001671 is a wasteful number, since it uses less digits than its factorization.

5665566001671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41432886 (or 41432883 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 5665566001671 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-six million, one thousand, six hundred seventy-one".