441363111610661 has 2 divisors, whose sum is σ = 441363111610662. Its totient is φ = 441363111610660.

The previous prime is 441363111610627. The next prime is 441363111610723. The reversal of 441363111610661 is 166016111363144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432951806560036 + 8411305050625 = 20807494^2 + 2900225^2 .

It is a cyclic number.

It is not a de Polignac number, because 441363111610661 - 2¹⁸ = 441363111348517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441363110610661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220681555805330 + 220681555805331.

It is an arithmetic number, because the mean of its divisors is an integer number (220681555805331).

Almost surely, 2^{441363111610661} is an apocalyptic number.

It is an amenable number.

441363111610661 is a deficient number, since it is larger than the sum of its proper divisors (1).

441363111610661 is an equidigital number, since it uses as much as digits as its factorization.

441363111610661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 441363111610661 in words is "four hundred forty-one trillion, three hundred sixty-three billion, one hundred eleven million, six hundred ten thousand, six hundred sixty-one".