6405364161 has 48 divisors (see below), whose sum is σ = 10726709760. Its totient is φ = 3607493760.

The previous prime is 6405364157. The next prime is 6405364213. The reversal of 6405364161 is 1614635046.

It is a happy number.

6405364161 is a `hidden beast` number, since 6 + 4 + 0 + 5 + 3 + 641 + 6 + 1 = 666.

It is not a de Polignac number, because 6405364161 - 2² = 6405364157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6405364111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5279991 + ... + 5281203.

It is an arithmetic number, because the mean of its divisors is an integer number (223473120).

Almost surely, 2^6405364161 is an apocalyptic number.

It is an amenable number.

6405364161 is a deficient number, since it is larger than the sum of its proper divisors (4321345599).

6405364161 is a wasteful number, since it uses less digits than its factorization.

6405364161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6405364161 is about 80033.5189842356. The cubic root of 6405364161 is about 1857.1541017135.

The spelling of 6405364161 in words is "six billion, four hundred five million, three hundred sixty-four thousand, one hundred sixty-one".