40343320040 has 16 divisors (see below), whose sum is σ = 90772470180. Its totient is φ = 16137328000.

The previous prime is 40343320033. The next prime is 40343320049. The reversal of 40343320040 is 4002334304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35851907716 + 4491412324 = 189346^2 + 67018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40343319988 and 40343320015.

It is not an unprimeable number, because it can be changed into a prime (40343320049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504291461 + ... + 504291540.

Almost surely, 2^40343320040 is an apocalyptic number.

40343320040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40343320040 is an abundant number, since it is smaller than the sum of its proper divisors (50429150140).

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

40343320040 is a wasteful number, since it uses less digits than its factorization.

40343320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008583012 (or 1008583008 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 40343320040 its reverse (4002334304), we get a palindrome (44345654344).

The spelling of 40343320040 in words is "forty billion, three hundred forty-three million, three hundred twenty thousand, forty".