40043423365 has 16 divisors (see below), whose sum is σ = 52512649920. Its totient is φ = 29071285120.

The previous prime is 40043423359. The next prime is 40043423389. The reversal of 40043423365 is 56332434004.

It is not a de Polignac number, because 40043423365 - 2⁵ = 40043423333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40043423365.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608479 + ... + 671068.

It is an arithmetic number, because the mean of its divisors is an integer number (3282040620).

Almost surely, 2^40043423365 is an apocalyptic number.

It is an amenable number.

40043423365 is a deficient number, since it is larger than the sum of its proper divisors (12469226555).

40043423365 is a wasteful number, since it uses less digits than its factorization.

40043423365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280132.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 40043423365 its reverse (56332434004), we get a palindrome (96375857369).

The spelling of 40043423365 in words is "forty billion, forty-three million, four hundred twenty-three thousand, three hundred sixty-five".