2066420558565 has 48 divisors (see below), whose sum is σ = 3913453305216. Its totient is φ = 1000352188800.

The previous prime is 2066420558533. The next prime is 2066420558567. The reversal of 2066420558565 is 5658550246602.

2066420558565 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 4 + 20 + 5 + 58 + 565 = 666.

It is not a de Polignac number, because 2066420558565 - 2⁵ = 2066420558533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066420558567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2905846 + ... + 3546375.

It is an arithmetic number, because the mean of its divisors is an integer number (81530277192).

Almost surely, 2^{2066420558565} is an apocalyptic number.

It is an amenable number.

2066420558565 is a deficient number, since it is larger than the sum of its proper divisors (1847032746651).

2066420558565 is a wasteful number, since it uses less digits than its factorization.

2066420558565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6452890 (or 6452887 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 54.

The spelling of 2066420558565 in words is "two trillion, sixty-six billion, four hundred twenty million, five hundred fifty-eight thousand, five hundred sixty-five".