40004040445 has 16 divisors (see below), whose sum is σ = 48315191040. Its totient is φ = 31796990784.

The previous prime is 40004040413. The next prime is 40004040451. The reversal of 40004040445 is 54404040004.

It is a cyclic number.

It is not a de Polignac number, because 40004040445 - 2⁵ = 40004040413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453094 + ... + 534136.

It is an arithmetic number, because the mean of its divisors is an integer number (3019699440).

Almost surely, 2^40004040445 is an apocalyptic number.

It is an amenable number.

40004040445 is a deficient number, since it is larger than the sum of its proper divisors (8311150595).

40004040445 is a wasteful number, since it uses less digits than its factorization.

40004040445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81684.

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 40004040445 its reverse (54404040004), we get a palindrome (94408080449).

The spelling of 40004040445 in words is "forty billion, four million, forty thousand, four hundred forty-five".