4440541415621 has 4 divisors (see below), whose sum is σ = 4440559834092. Its totient is φ = 4440522997152.

The previous prime is 4440541415603. The next prime is 4440541415627. The reversal of 4440541415621 is 1265141450444.

4440541415621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2621857216225 + 1818684199396 = 1619215^2 + 1348586^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440541415621 - 2¹⁰ = 4440541414597 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 (4440541415627) 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, 8842736 + ... + 9331401.

It is an arithmetic number, because the mean of its divisors is an integer number (1110139958523).

Almost surely, 2^{4440541415621} is an apocalyptic number.

It is an amenable number.

4440541415621 is a deficient number, since it is larger than the sum of its proper divisors (18418471).

4440541415621 is a wasteful number, since it uses less digits than its factorization.

4440541415621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18418470.

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 4440541415621 in words is "four trillion, four hundred forty billion, five hundred forty-one million, four hundred fifteen thousand, six hundred twenty-one".