40144043655444 has 24 divisors (see below), whose sum is σ = 93874401150208. Its totient is φ = 13352067034560.

The previous prime is 40144043655439. The next prime is 40144043655539. The reversal of 40144043655444 is 44455634044104.

It is a happy number.

It is a super-2 number, since 2×40144043655444² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144043655393 and 40144043655402.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3660100612 + ... + 3660111579.

Almost surely, 2^{40144043655444} is an apocalyptic number.

It is an amenable number.

40144043655444 is an abundant number, since it is smaller than the sum of its proper divisors (53730357494764).

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

40144043655444 is a wasteful number, since it uses less digits than its factorization.

40144043655444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320212655 (or 7320212653 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 48.

Adding to 40144043655444 its reverse (44455634044104), we get a palindrome (84599677699548).

The spelling of 40144043655444 in words is "forty trillion, one hundred forty-four billion, forty-three million, six hundred fifty-five thousand, four hundred forty-four".