40303332440 has 128 divisors (see below), whose sum is σ = 104744586240. Its totient is φ = 13671430656.

The previous prime is 40303332431. The next prime is 40303332449. The reversal of 40303332440 is 4423330304.

It is an interprime number because it is at equal distance from previous prime (40303332431) and next prime (40303332449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40303332449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10612622 + ... + 10616418.

It is an arithmetic number, because the mean of its divisors is an integer number (818317080).

Almost surely, 2^40303332440 is an apocalyptic number.

40303332440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40303332440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52372293120).

40303332440 is an abundant number, since it is smaller than the sum of its proper divisors (64441253800).

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

40303332440 is a wasteful number, since it uses less digits than its factorization.

40303332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 26.

Adding to 40303332440 its reverse (4423330304), we get a palindrome (44726662744).

The spelling of 40303332440 in words is "forty billion, three hundred three million, three hundred thirty-two thousand, four hundred forty".