40003200065 has 16 divisors (see below), whose sum is σ = 48872194896. Its totient is φ = 31425408000.

The previous prime is 40003200047. The next prime is 40003200067. The reversal of 40003200065 is 56000230004.

It is a Cunningham number, because it is equal to 200008²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1300900624 + 38702299441 = 36068^2 + 196729^2 .

It is not a de Polignac number, because 40003200065 - 2¹⁶ = 40003134529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40003200067) 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 15 ways as a sum of consecutive naturals, for example, 74189 + ... + 292421.

It is an arithmetic number, because the mean of its divisors is an integer number (3054512181).

Almost surely, 2^40003200065 is an apocalyptic number.

It is an amenable number.

40003200065 is a deficient number, since it is larger than the sum of its proper divisors (8868994831).

40003200065 is a wasteful number, since it uses less digits than its factorization.

40003200065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218900.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 40003200065 its reverse (56000230004), we get a palindrome (96003430069).

The spelling of 40003200065 in words is "forty billion, three million, two hundred thousand, sixty-five".