40144432444 has 24 divisors (see below), whose sum is σ = 70442749440. Its totient is φ = 20017986096.

The previous prime is 40144432381. The next prime is 40144432487. The reversal of 40144432444 is 44423444104.

It is a super-2 number, since 2×40144432444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 3648319 + ... + 3659305.

It is an arithmetic number, because the mean of its divisors is an integer number (2935114560).

Almost surely, 2^40144432444 is an apocalyptic number.

It is an amenable number.

40144432444 is a deficient number, since it is larger than the sum of its proper divisors (30298316996).

40144432444 is a wasteful number, since it uses less digits than its factorization.

40144432444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13377 (or 13375 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 40144432444 its reverse (44423444104), we get a palindrome (84567876548).

The spelling of 40144432444 in words is "forty billion, one hundred forty-four million, four hundred thirty-two thousand, four hundred forty-four".