40408044368 has 10 divisors (see below), whose sum is σ = 78290585994. Its totient is φ = 20204022176.

The previous prime is 40408044367. The next prime is 40408044437. The reversal of 40408044368 is 86344080404.

It can be written as a sum of positive squares in only one way, i.e., 35981537344 + 4426507024 = 189688^2 + 66532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40408044367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1262751371 + ... + 1262751402.

Almost surely, 2^40408044368 is an apocalyptic number.

It is an amenable number.

40408044368 is a deficient number, since it is larger than the sum of its proper divisors (37882541626).

40408044368 is a wasteful number, since it uses less digits than its factorization.

40408044368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525502781 (or 2525502775 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 41.

It can be divided in two parts, 4040 and 8044368, that added together give a palindrome (8048408).

The spelling of 40408044368 in words is "forty billion, four hundred eight million, forty-four thousand, three hundred sixty-eight".