40044404040 has 256 divisors, whose sum is σ = 124906648320. Its totient is φ = 10265149440.

The previous prime is 40044404033. The next prime is 40044404093. The reversal of 40044404040 is 4040444004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40044404040.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 73207047 + ... + 73207593.

It is an arithmetic number, because the mean of its divisors is an integer number (487916595).

Almost surely, 2^40044404040 is an apocalyptic number.

40044404040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40044404040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62453324160).

40044404040 is an abundant number, since it is smaller than the sum of its proper divisors (84862244280).

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

40044404040 is a wasteful number, since it uses less digits than its factorization.

40044404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40044404040 its reverse (4040444004), we get a palindrome (44084848044).

It can be divided in two parts, 4004 and 4404040, that added together give a palindrome (4408044).

The spelling of 40044404040 in words is "forty billion, forty-four million, four hundred four thousand, forty".