40443444004141 has 4 divisors (see below), whose sum is σ = 40482595451452. Its totient is φ = 40404292556832.

The previous prime is 40443444004129. The next prime is 40443444004241. The reversal of 40443444004141 is 14140044434404.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28158454054116 + 12284989950025 = 5306454^2 + 3504995^2 .

It is a cyclic number.

It is not a de Polignac number, because 40443444004141 - 2²³ = 40443435615533 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 40443444004141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443444004241) 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, 19575722106 + ... + 19575724171.

It is an arithmetic number, because the mean of its divisors is an integer number (10120648862863).

Almost surely, 2^{40443444004141} is an apocalyptic number.

It is an amenable number.

40443444004141 is a deficient number, since it is larger than the sum of its proper divisors (39151447311).

40443444004141 is a wasteful number, since it uses less digits than its factorization.

40443444004141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39151447310.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 40443444004141 its reverse (14140044434404), we get a palindrome (54583488438545).

The spelling of 40443444004141 in words is "forty trillion, four hundred forty-three billion, four hundred forty-four million, four thousand, one hundred forty-one".