441523268811661 has 2 divisors, whose sum is σ = 441523268811662. Its totient is φ = 441523268811660.

The previous prime is 441523268811601. The next prime is 441523268811721. The reversal of 441523268811661 is 166118862325144.

It is a balanced prime because it is at equal distance from previous prime (441523268811601) and next prime (441523268811721).

It can be written as a sum of positive squares in only one way, i.e., 313376204929225 + 128147063882436 = 17702435^2 + 11320206^2 .

It is a cyclic number.

It is not a de Polignac number, because 441523268811661 - 2¹¹ = 441523268809613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 441523268811596 and 441523268811605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441523268811601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220761634405830 + 220761634405831.

It is an arithmetic number, because the mean of its divisors is an integer number (220761634405831).

Almost surely, 2^{441523268811661} is an apocalyptic number.

It is an amenable number.

441523268811661 is a deficient number, since it is larger than the sum of its proper divisors (1).

441523268811661 is an equidigital number, since it uses as much as digits as its factorization.

441523268811661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13271040, while the sum is 58.

The spelling of 441523268811661 in words is "four hundred forty-one trillion, five hundred twenty-three billion, two hundred sixty-eight million, eight hundred eleven thousand, six hundred sixty-one".