41654045581 has 2 divisors, whose sum is σ = 41654045582. Its totient is φ = 41654045580.

The previous prime is 41654045569. The next prime is 41654045633. The reversal of 41654045581 is 18554045614.

41654045581 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., 41081209225 + 572836356 = 202685^2 + 23934^2 .

It is a cyclic number.

It is not a de Polignac number, because 41654045581 - 2²⁵ = 41620491149 is a prime.

It is a super-2 number, since 2×41654045581² (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 (41654045551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20827022790 + 20827022791.

It is an arithmetic number, because the mean of its divisors is an integer number (20827022791).

Almost surely, 2^41654045581 is an apocalyptic number.

It is an amenable number.

41654045581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41654045581 is an equidigital number, since it uses as much as digits as its factorization.

41654045581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 41654045581 in words is "forty-one billion, six hundred fifty-four million, forty-five thousand, five hundred eighty-one".