40044444965 has 16 divisors (see below), whose sum is σ = 54967052928. Its totient is φ = 27434569536.

The previous prime is 40044444919. The next prime is 40044444991. The reversal of 40044444965 is 56944444004.

It is a cyclic number.

It is not a de Polignac number, because 40044444965 - 2¹⁰ = 40044443941 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 470102 + ... + 548711.

It is an arithmetic number, because the mean of its divisors is an integer number (3435440808).

Almost surely, 2^40044444965 is an apocalyptic number.

It is an amenable number.

40044444965 is a deficient number, since it is larger than the sum of its proper divisors (14922607963).

40044444965 is a wasteful number, since it uses less digits than its factorization.

40044444965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019948.

The product of its (nonzero) digits is 1105920, while the sum is 44.

Adding to 40044444965 its reverse (56944444004), we get a palindrome (96988888969).

The spelling of 40044444965 in words is "forty billion, forty-four million, four hundred forty-four thousand, nine hundred sixty-five".