40004040040 has 32 divisors (see below), whose sum is σ = 90035815680. Its totient is φ = 15996864832.

The previous prime is 40004040023. The next prime is 40004040049. The reversal of 40004040040 is 4004040004.

It is a junction number, because it is equal to n+sod(n) for n = 40004039996 and 40004040023.

It is not an unprimeable number, because it can be changed into a prime (40004040049) 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, 10492 + ... + 283051.

It is an arithmetic number, because the mean of its divisors is an integer number (2813619240).

Almost surely, 2^40004040040 is an apocalyptic number.

40004040040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40004040040 is an abundant number, since it is smaller than the sum of its proper divisors (50031775640).

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

40004040040 is a wasteful number, since it uses less digits than its factorization.

40004040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296961 (or 296957 counting only the distinct ones).

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

Adding to 40004040040 its reverse (4004040004), we get a palindrome (44008080044).

The spelling of 40004040040 in words is "forty billion, four million, forty thousand, forty", and thus it is an eban number.