41664445321 has 2 divisors, whose sum is σ = 41664445322. Its totient is φ = 41664445320.

The previous prime is 41664445313. The next prime is 41664445351. The reversal of 41664445321 is 12354446614.

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., 34722222921 + 6942222400 = 186339^2 + 83320^2 .

It is a cyclic number.

It is not a de Polignac number, because 41664445321 - 2³ = 41664445313 is a prime.

It is not a weakly prime, because it can be changed into another prime (41664445351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832222660 + 20832222661.

It is an arithmetic number, because the mean of its divisors is an integer number (20832222661).

Almost surely, 2^41664445321 is an apocalyptic number.

It is an amenable number.

41664445321 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664445321 is an equidigital number, since it uses as much as digits as its factorization.

41664445321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 40.

The spelling of 41664445321 in words is "forty-one billion, six hundred sixty-four million, four hundred forty-five thousand, three hundred twenty-one".