40004224644 has 12 divisors (see below), whose sum is σ = 93343190864. Its totient is φ = 13334741544.

The previous prime is 40004224597. The next prime is 40004224649. The reversal of 40004224644 is 44642240004.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40004224649) 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 3 ways as a sum of consecutive naturals, for example, 1666842682 + ... + 1666842705.

Almost surely, 2^40004224644 is an apocalyptic number.

It is an amenable number.

40004224644 is an abundant number, since it is smaller than the sum of its proper divisors (53338966220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40004224644 is a wasteful number, since it uses less digits than its factorization.

40004224644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333685394 (or 3333685392 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 40004224644 its reverse (44642240004), we get a palindrome (84646464648).

The spelling of 40004224644 in words is "forty billion, four million, two hundred twenty-four thousand, six hundred forty-four".