41216606621 has 2 divisors, whose sum is σ = 41216606622. Its totient is φ = 41216606620.

The previous prime is 41216606581. The next prime is 41216606633. The reversal of 41216606621 is 12660661214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27070120900 + 14146485721 = 164530^2 + 118939^2 .

It is a cyclic number.

It is not a de Polignac number, because 41216606621 - 2¹⁰ = 41216605597 is a prime.

It is a super-2 number, since 2×41216606621² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41216606521) 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 as a sum of consecutive naturals, namely, 20608303310 + 20608303311.

It is an arithmetic number, because the mean of its divisors is an integer number (20608303311).

Almost surely, 2^41216606621 is an apocalyptic number.

It is an amenable number.

41216606621 is a deficient number, since it is larger than the sum of its proper divisors (1).

41216606621 is an equidigital number, since it uses as much as digits as its factorization.

41216606621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 41216606621 in words is "forty-one billion, two hundred sixteen million, six hundred six thousand, six hundred twenty-one".