40204444240 has 40 divisors (see below), whose sum is σ = 93506381280. Its totient is φ = 16076436096.

The previous prime is 40204444193. The next prime is 40204444243. The reversal of 40204444240 is 4244440204.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 40204444199 and 40204444208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40204444243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163431 + ... + 327289.

It is an arithmetic number, because the mean of its divisors is an integer number (2337659532).

Almost surely, 2^40204444240 is an apocalyptic number.

40204444240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40204444240 is an abundant number, since it is smaller than the sum of its proper divisors (53301937040).

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

40204444240 is a wasteful number, since it uses less digits than its factorization.

40204444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166939 (or 166933 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40204444240 its reverse (4244440204), we get a palindrome (44448884444).

The spelling of 40204444240 in words is "forty billion, two hundred four million, four hundred forty-four thousand, two hundred forty".