40040010040 has 32 divisors (see below), whose sum is σ = 90108586080. Its totient is φ = 16012703872.

The previous prime is 40040009957. The next prime is 40040010041. The reversal of 40040010040 is 4001004004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040010040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040010041) by changing a digit.

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, 98277 + ... + 299563.

It is an arithmetic number, because the mean of its divisors is an integer number (2815893315).

Almost surely, 2^40040010040 is an apocalyptic number.

40040010040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40040010040 is an abundant number, since it is smaller than the sum of its proper divisors (50068576040).

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

40040010040 is a wasteful number, since it uses less digits than its factorization.

40040010040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206271 (or 206267 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40040010040 its reverse (4001004004), we get a palindrome (44041014044).

The spelling of 40040010040 in words is "forty billion, forty million, ten thousand, forty".