40440331432 has 32 divisors (see below), whose sum is σ = 77605735680. Its totient is φ = 19745671680.

The previous prime is 40440331361. The next prime is 40440331441. The reversal of 40440331432 is 23413304404.

It is a self number, because there is not a number n which added to its sum of digits gives 40440331432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2093257 + ... + 2112487.

It is an arithmetic number, because the mean of its divisors is an integer number (2425179240).

Almost surely, 2^40440331432 is an apocalyptic number.

It is an amenable number.

40440331432 is a deficient number, since it is larger than the sum of its proper divisors (37165404248).

40440331432 is a wasteful number, since it uses less digits than its factorization.

40440331432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25393 (or 25389 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40440331432 its reverse (23413304404), we get a palindrome (63853635836).

The spelling of 40440331432 in words is "forty billion, four hundred forty million, three hundred thirty-one thousand, four hundred thirty-two".