40020044000 has 48 divisors (see below), whose sum is σ = 98329257936. Its totient is φ = 16008016000.

The previous prime is 40020043997. The next prime is 40020044047. The reversal of 40020044000 is 44002004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4998506 + ... + 5006505.

It is an arithmetic number, because the mean of its divisors is an integer number (2048526207).

Almost surely, 2^40020044000 is an apocalyptic number.

40020044000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40020044000 is an abundant number, since it is smaller than the sum of its proper divisors (58309213936).

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

40020044000 is a wasteful number, since it uses less digits than its factorization.

40020044000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005036 (or 10005018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 40020044000 its reverse (44002004), we get a palindrome (40064046004).

It can be divided in two parts, 4002004 and 4000, that added together give a palindrome (4006004).

The spelling of 40020044000 in words is "forty billion, twenty million, forty-four thousand".