1665441241263 has 24 divisors (see below), whose sum is σ = 2548711356048. Its totient is φ = 1044340307712.

The previous prime is 1665441241231. The next prime is 1665441241313. The reversal of 1665441241263 is 3621421445661.

1665441241263 is a `hidden beast` number, since 1 + 6 + 6 + 544 + 1 + 2 + 41 + 2 + 63 = 666.

It is not a de Polignac number, because 1665441241263 - 2⁵ = 1665441241231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665441241223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3096256 + ... + 3594117.

It is an arithmetic number, because the mean of its divisors is an integer number (106196306502).

Almost surely, 2^{1665441241263} is an apocalyptic number.

1665441241263 is a deficient number, since it is larger than the sum of its proper divisors (883270114785).

1665441241263 is a wasteful number, since it uses less digits than its factorization.

1665441241263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692023 (or 6692020 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 1665441241263 in words is "one trillion, six hundred sixty-five billion, four hundred forty-one million, two hundred forty-one thousand, two hundred sixty-three".