40041435544421 has 8 divisors (see below), whose sum is σ = 41355796446360. Its totient is φ = 38747773239552.

The previous prime is 40041435544403. The next prime is 40041435544423. The reversal of 40041435544421 is 12444553414004.

It can be written as a sum of positive squares in 4 ways, for example, as 21397054233025 + 18644381311396 = 4625695^2 + 4317914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40041435544421 - 2²⁶ = 40041368435557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40041435544423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5174645336 + ... + 5174653073.

It is an arithmetic number, because the mean of its divisors is an integer number (5169474555795).

Almost surely, 2^{40041435544421} is an apocalyptic number.

It is an amenable number.

40041435544421 is a deficient number, since it is larger than the sum of its proper divisors (1314360901939).

40041435544421 is a wasteful number, since it uses less digits than its factorization.

40041435544421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10349298535.

The product of its (nonzero) digits is 614400, while the sum is 41.

Adding to 40041435544421 its reverse (12444553414004), we get a palindrome (52485988958425).

The spelling of 40041435544421 in words is "forty trillion, forty-one billion, four hundred thirty-five million, five hundred forty-four thousand, four hundred twenty-one".