20000040205 has 16 divisors (see below), whose sum is σ = 25266890880. Its totient is φ = 15155716032.

The previous prime is 20000040173. The next prime is 20000040223. The reversal of 20000040205 is 50204000002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20000040205 - 2⁵ = 20000040173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973752 + ... + 994078.

It is an arithmetic number, because the mean of its divisors is an integer number (1579180680).

Almost surely, 2^20000040205 is an apocalyptic number.

It is an amenable number.

20000040205 is a deficient number, since it is larger than the sum of its proper divisors (5266850675).

20000040205 is a wasteful number, since it uses less digits than its factorization.

20000040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30708.

The product of its (nonzero) digits is 80, while the sum is 13.

Adding to 20000040205 its reverse (50204000002), we get a palindrome (70204040207).

The spelling of 20000040205 in words is "twenty billion, forty thousand, two hundred five".