40040020332 has 48 divisors (see below), whose sum is σ = 111792653280. Its totient is φ = 12320005824.

The previous prime is 40040020331. The next prime is 40040020343. The reversal of 40040020332 is 23302004004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40040020331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14257863 + ... + 14260670.

It is an arithmetic number, because the mean of its divisors is an integer number (2329013610).

Almost surely, 2^40040020332 is an apocalyptic number.

It is an amenable number.

40040020332 is an abundant number, since it is smaller than the sum of its proper divisors (71752632948).

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

40040020332 is a wasteful number, since it uses less digits than its factorization.

40040020332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28518559 (or 28518551 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 40040020332 its reverse (23302004004), we get a palindrome (63342024336).

The spelling of 40040020332 in words is "forty billion, forty million, twenty thousand, three hundred thirty-two".