40044123133111 has 4 divisors (see below), whose sum is σ = 40131747035392. Its totient is φ = 39956499230832.

The previous prime is 40044123133037. The next prime is 40044123133123. The reversal of 40044123133111 is 11133132144004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40044123133111 - 2¹¹ = 40044123131063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40044123133111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044123133811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43811950455 + ... + 43811951368.

It is an arithmetic number, because the mean of its divisors is an integer number (10032936758848).

Almost surely, 2^{40044123133111} is an apocalyptic number.

40044123133111 is a deficient number, since it is larger than the sum of its proper divisors (87623902281).

40044123133111 is an equidigital number, since it uses as much as digits as its factorization.

40044123133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87623902280.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 40044123133111 its reverse (11133132144004), we get a palindrome (51177255277115).

The spelling of 40044123133111 in words is "forty trillion, forty-four billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred eleven".