6405355066 has 16 divisors (see below), whose sum is σ = 10484056800. Its totient is φ = 2910812080.

The previous prime is 6405354913. The next prime is 6405355079. The reversal of 6405355066 is 6605535046.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62205 + ... + 129151.

It is an arithmetic number, because the mean of its divisors is an integer number (655253550).

Almost surely, 2^6405355066 is an apocalyptic number.

6405355066 is a deficient number, since it is larger than the sum of its proper divisors (4078701734).

6405355066 is a wasteful number, since it uses less digits than its factorization.

6405355066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71309.

The product of its (nonzero) digits is 324000, while the sum is 40.

The square root of 6405355066 is about 80033.4621642723. The cubic root of 6405355066 is about 1857.1532227198.

The spelling of 6405355066 in words is "six billion, four hundred five million, three hundred fifty-five thousand, sixty-six".