441261521241621 has 16 divisors (see below), whose sum is σ = 588926468239488. Its totient is φ = 293885482766400.

The previous prime is 441261521241553. The next prime is 441261521241637. The reversal of 441261521241621 is 126142125162144.

It is not a de Polignac number, because 441261521241621 - 2⁹ = 441261521241109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441261521281621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78273891 + ... + 83721711.

It is an arithmetic number, because the mean of its divisors is an integer number (36807904264968).

Almost surely, 2^{441261521241621} is an apocalyptic number.

It is an amenable number.

441261521241621 is a deficient number, since it is larger than the sum of its proper divisors (147664946997867).

441261521241621 is a wasteful number, since it uses less digits than its factorization.

441261521241621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474332.

The product of its digits is 184320, while the sum is 42.

The spelling of 441261521241621 in words is "four hundred forty-one trillion, two hundred sixty-one billion, five hundred twenty-one million, two hundred forty-one thousand, six hundred twenty-one".