40204044040 has 32 divisors (see below), whose sum is σ = 92665422360. Its totient is φ = 15689382400.

The previous prime is 40204044031. The next prime is 40204044043. The reversal of 40204044040 is 4044040204.

It can be written as a sum of positive squares in 4 ways, for example, as 16553910244 + 23650133796 = 128662^2 + 153786^2 .

It is not an unprimeable number, because it can be changed into a prime (40204044043) 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, 12255691 + ... + 12258970.

Almost surely, 2^40204044040 is an apocalyptic number.

40204044040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40204044040 is an abundant number, since it is smaller than the sum of its proper divisors (52461378320).

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

40204044040 is a wasteful number, since it uses less digits than its factorization.

40204044040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24514713 (or 24514709 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 40204044040 its reverse (4044040204), we get a palindrome (44248084244).

The spelling of 40204044040 in words is "forty billion, two hundred four million, forty-four thousand, forty".