40004000205 has 48 divisors (see below), whose sum is σ = 72748932480. Its totient is φ = 18657703296.

The previous prime is 40004000203. The next prime is 40004000249. The reversal of 40004000205 is 50200040004.

It is not a de Polignac number, because 40004000205 - 2¹ = 40004000203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004000203) 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, 213745 + ... + 354534.

It is an arithmetic number, because the mean of its divisors is an integer number (1515602760).

Almost surely, 2^40004000205 is an apocalyptic number.

It is an amenable number.

40004000205 is a deficient number, since it is larger than the sum of its proper divisors (32744932275).

40004000205 is a wasteful number, since it uses less digits than its factorization.

40004000205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568338 (or 568319 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

Adding to 40004000205 its reverse (50200040004), we get a palindrome (90204040209).

The spelling of 40004000205 in words is "forty billion, four million, two hundred five", and thus it is an aban number.