40443314065 has 48 divisors (see below), whose sum is σ = 61052592384. Its totient is φ = 25175525760.

The previous prime is 40443314039. The next prime is 40443314069. The reversal of 40443314065 is 56041334404.

It is not a de Polignac number, because 40443314065 - 2²¹ = 40441216913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40443314065.

It is not an unprimeable number, because it can be changed into a prime (40443314069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3140179 + ... + 3153031.

It is an arithmetic number, because the mean of its divisors is an integer number (1271929008).

Almost surely, 2^40443314065 is an apocalyptic number.

It is an amenable number.

40443314065 is a deficient number, since it is larger than the sum of its proper divisors (20609278319).

40443314065 is a wasteful number, since it uses less digits than its factorization.

40443314065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13630 (or 13619 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 40443314065 its reverse (56041334404), we get a palindrome (96484648469).

The spelling of 40443314065 in words is "forty billion, four hundred forty-three million, three hundred fourteen thousand, sixty-five".