40443234405 has 64 divisors (see below), whose sum is σ = 75839182848. Its totient is φ = 18018766080.

The previous prime is 40443234401. The next prime is 40443234421. The reversal of 40443234405 is 50443234404.

It is not a de Polignac number, because 40443234405 - 2² = 40443234401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443234401) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2098915 + ... + 2118095.

It is an arithmetic number, because the mean of its divisors is an integer number (1184987232).

Almost surely, 2^40443234405 is an apocalyptic number.

It is an amenable number.

40443234405 is a deficient number, since it is larger than the sum of its proper divisors (35395948443).

40443234405 is a wasteful number, since it uses less digits than its factorization.

40443234405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19706.

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 40443234405 its reverse (50443234404), we get a palindrome (90886468809).

Subtracting 40443234405 from its reverse (50443234404), we obtain a palindrome (9999999999).

The spelling of 40443234405 in words is "forty billion, four hundred forty-three million, two hundred thirty-four thousand, four hundred five".