4040440407640 has 64 divisors (see below), whose sum is σ = 11188911908160. Its totient is φ = 1278732787200.

The previous prime is 4040440407607. The next prime is 4040440407649. The reversal of 4040440407640 is 467040440404.

It is a self number, because there is not a number n which added to its sum of digits gives 4040440407640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040440407649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555001911 + ... + 555009190.

It is an arithmetic number, because the mean of its divisors is an integer number (174826748565).

Almost surely, 2^{4040440407640} is an apocalyptic number.

4040440407640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040440407640 is an abundant number, since it is smaller than the sum of its proper divisors (7148471500520).

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

4040440407640 is a wasteful number, since it uses less digits than its factorization.

4040440407640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110011132 (or 1110011128 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 37.

The spelling of 4040440407640 in words is "four trillion, forty billion, four hundred forty million, four hundred seven thousand, six hundred forty".