40400443144 has 32 divisors (see below), whose sum is σ = 76833423000. Its totient is φ = 19911854592.

The previous prime is 40400443117. The next prime is 40400443157. The reversal of 40400443144 is 44134400404.

It can be written as a sum of positive squares in 4 ways, for example, as 37195751044 + 3204692100 = 192862^2 + 56610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025442 + ... + 1064110.

Almost surely, 2^40400443144 is an apocalyptic number.

It is an amenable number.

40400443144 is a deficient number, since it is larger than the sum of its proper divisors (36432979856).

40400443144 is a wasteful number, since it uses less digits than its factorization.

40400443144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40537 (or 40533 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40400443144 its reverse (44134400404), we get a palindrome (84534843548).

The spelling of 40400443144 in words is "forty billion, four hundred million, four hundred forty-three thousand, one hundred forty-four".