41664943109 has 2 divisors, whose sum is σ = 41664943110. Its totient is φ = 41664943108.

The previous prime is 41664943093. The next prime is 41664943129. The reversal of 41664943109 is 90134946614.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41566238884 + 98704225 = 203878^2 + 9935^2 .

It is a cyclic number.

It is not a de Polignac number, because 41664943109 - 2⁴ = 41664943093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41664943129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832471554 + 20832471555.

It is an arithmetic number, because the mean of its divisors is an integer number (20832471555).

Almost surely, 2^41664943109 is an apocalyptic number.

It is an amenable number.

41664943109 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664943109 is an equidigital number, since it uses as much as digits as its factorization.

41664943109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 41664943109 in words is "forty-one billion, six hundred sixty-four million, nine hundred forty-three thousand, one hundred nine".