41664433861 has 2 divisors, whose sum is σ = 41664433862. Its totient is φ = 41664433860.

The previous prime is 41664433843. The next prime is 41664433871. The reversal of 41664433861 is 16833446614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24934304836 + 16730129025 = 157906^2 + 129345^2 .

It is a cyclic number.

It is not a de Polignac number, because 41664433861 - 2²⁵ = 41630879429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41664433871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832216930 + 20832216931.

It is an arithmetic number, because the mean of its divisors is an integer number (20832216931).

Almost surely, 2^41664433861 is an apocalyptic number.

It is an amenable number.

41664433861 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664433861 is an equidigital number, since it uses as much as digits as its factorization.

41664433861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 46.

The spelling of 41664433861 in words is "forty-one billion, six hundred sixty-four million, four hundred thirty-three thousand, eight hundred sixty-one".