40804040805 has 32 divisors (see below), whose sum is σ = 74970109440. Its totient is φ = 18742524480.

The previous prime is 40804040803. The next prime is 40804040819. The reversal of 40804040805 is 50804040804.

It is not a de Polignac number, because 40804040805 - 2¹ = 40804040803 is a prime.

It is a super-2 number, since 2×40804040805² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40804040803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6504687 + ... + 6510956.

It is an arithmetic number, because the mean of its divisors is an integer number (2342815920).

Almost surely, 2^40804040805 is an apocalyptic number.

It is an amenable number.

40804040805 is a deficient number, since it is larger than the sum of its proper divisors (34166068635).

40804040805 is a wasteful number, since it uses less digits than its factorization.

40804040805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13015681.

The product of its (nonzero) digits is 20480, while the sum is 33.

Subtracting 40804040805 from its reverse (50804040804), we obtain a palindrome (9999999999).

The spelling of 40804040805 in words is "forty billion, eight hundred four million, forty thousand, eight hundred five".