40200440020 has 24 divisors (see below), whose sum is σ = 90914841864. Its totient is φ = 14843239296.

The previous prime is 40200440011. The next prime is 40200440041. The reversal of 40200440020 is 2004400204.

It can be written as a sum of positive squares in 4 ways, for example, as 6089305156 + 34111134864 = 78034^2 + 184692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40200439976 and 40200440003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77308279 + ... + 77308798.

It is an arithmetic number, because the mean of its divisors is an integer number (3788118411).

Almost surely, 2^40200440020 is an apocalyptic number.

It is an amenable number.

40200440020 is an abundant number, since it is smaller than the sum of its proper divisors (50714401844).

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

40200440020 is a wasteful number, since it uses less digits than its factorization.

40200440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154617099 (or 154617097 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 40200440020 its reverse (2004400204), we get a palindrome (42204840224).

The spelling of 40200440020 in words is "forty billion, two hundred million, four hundred forty thousand, twenty".