40104344000221 has 4 divisors (see below), whose sum is σ = 40459249699452. Its totient is φ = 39749438300992.

The previous prime is 40104344000219. The next prime is 40104344000251. The reversal of 40104344000221 is 12200044340104.

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 3149932788025 + 36954411212196 = 1774805^2 + 6079014^2 .

It is a cyclic number.

It is not a de Polignac number, because 40104344000221 - 2¹ = 40104344000219 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 (40104344000251) 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, 177452849446 + ... + 177452849671.

It is an arithmetic number, because the mean of its divisors is an integer number (10114812424863).

Almost surely, 2^{40104344000221} is an apocalyptic number.

It is an amenable number.

40104344000221 is a deficient number, since it is larger than the sum of its proper divisors (354905699231).

40104344000221 is a wasteful number, since it uses less digits than its factorization.

40104344000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354905699230.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40104344000221 its reverse (12200044340104), we get a palindrome (52304388340325).

The spelling of 40104344000221 in words is "forty trillion, one hundred four billion, three hundred forty-four million, two hundred twenty-one", and thus it is an aban number.