4056400065 has 16 divisors (see below), whose sum is σ = 6699603456. Its totient is φ = 2093625600.

The previous prime is 4056400043. The next prime is 4056400069. The reversal of 4056400065 is 5600046504.

It is not a de Polignac number, because 4056400065 - 2⁹ = 4056399553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4056400069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4361256 + ... + 4362185.

It is an arithmetic number, because the mean of its divisors is an integer number (418725216).

Almost surely, 2^4056400065 is an apocalyptic number.

It is an amenable number.

4056400065 is a deficient number, since it is larger than the sum of its proper divisors (2643203391).

4056400065 is a wasteful number, since it uses less digits than its factorization.

4056400065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8723480.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 4056400065 is about 63689.8741166914. The cubic root of 4056400065 is about 1594.8270518674.

Adding to 4056400065 its reverse (5600046504), we get a palindrome (9656446569).

The spelling of 4056400065 in words is "four billion, fifty-six million, four hundred thousand, sixty-five".