41646462581 has 2 divisors, whose sum is σ = 41646462582. Its totient is φ = 41646462580.

The previous prime is 41646462569. The next prime is 41646462607. The reversal of 41646462581 is 18526464614.

41646462581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35932614481 + 5713848100 = 189559^2 + 75590^2 .

It is a cyclic number.

It is not a de Polignac number, because 41646462581 - 2¹⁰ = 41646461557 is a prime.

It is a super-2 number, since 2×41646462581² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41646462541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20823231290 + 20823231291.

It is an arithmetic number, because the mean of its divisors is an integer number (20823231291).

Almost surely, 2^41646462581 is an apocalyptic number.

It is an amenable number.

41646462581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41646462581 is an equidigital number, since it uses as much as digits as its factorization.

41646462581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1105920, while the sum is 47.

The spelling of 41646462581 in words is "forty-one billion, six hundred forty-six million, four hundred sixty-two thousand, five hundred eighty-one".