406566165165 has 32 divisors (see below), whose sum is σ = 653741383680. Its totient is φ = 215758710336.

The previous prime is 406566165143. The next prime is 406566165191. The reversal of 406566165165 is 561561665604.

It is not a de Polignac number, because 406566165165 - 2⁷ = 406566165037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3344826 + ... + 3464244.

It is an arithmetic number, because the mean of its divisors is an integer number (20429418240).

Almost surely, 2^406566165165 is an apocalyptic number.

It is an amenable number.

406566165165 is a deficient number, since it is larger than the sum of its proper divisors (247175218515).

406566165165 is a wasteful number, since it uses less digits than its factorization.

406566165165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120553.

The product of its (nonzero) digits is 3888000, while the sum is 51.

The spelling of 406566165165 in words is "four hundred six billion, five hundred sixty-six million, one hundred sixty-five thousand, one hundred sixty-five".