41530511021 has 2 divisors, whose sum is σ = 41530511022. Its totient is φ = 41530511020.

The previous prime is 41530511003. The next prime is 41530511083. The reversal of 41530511021 is 12011503514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38968734025 + 2561776996 = 197405^2 + 50614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41530511021 is a prime.

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 (41530511221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20765255510 + 20765255511.

It is an arithmetic number, because the mean of its divisors is an integer number (20765255511).

Almost surely, 2^41530511021 is an apocalyptic number.

It is an amenable number.

41530511021 is a deficient number, since it is larger than the sum of its proper divisors (1).

41530511021 is an equidigital number, since it uses as much as digits as its factorization.

41530511021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 41530511021 in words is "forty-one billion, five hundred thirty million, five hundred eleven thousand, twenty-one".