40640344232 has 16 divisors (see below), whose sum is σ = 76874989140. Its totient is φ = 20140347136.

The previous prime is 40640344219. The next prime is 40640344259. The reversal of 40640344232 is 23244304604.

It can be written as a sum of positive squares in 2 ways, for example, as 25419200356 + 15221143876 = 159434^2 + 123374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22477163 + ... + 22478970.

Almost surely, 2^40640344232 is an apocalyptic number.

It is an amenable number.

40640344232 is a deficient number, since it is larger than the sum of its proper divisors (36234644908).

40640344232 is a wasteful number, since it uses less digits than its factorization.

40640344232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44956252 (or 44956248 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 40640344232 its reverse (23244304604), we get a palindrome (63884648836).

The spelling of 40640344232 in words is "forty billion, six hundred forty million, three hundred forty-four thousand, two hundred thirty-two".