41556045571 has 2 divisors, whose sum is σ = 41556045572. Its totient is φ = 41556045570.

The previous prime is 41556045527. The next prime is 41556045611. The reversal of 41556045571 is 17554065514.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41556045571 - 2¹⁵ = 41556012803 is a prime.

It is not a weakly prime, because it can be changed into another prime (41556042571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20778022785 + 20778022786.

It is an arithmetic number, because the mean of its divisors is an integer number (20778022786).

Almost surely, 2^41556045571 is an apocalyptic number.

41556045571 is a deficient number, since it is larger than the sum of its proper divisors (1).

41556045571 is an equidigital number, since it uses as much as digits as its factorization.

41556045571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 41556045571 in words is "forty-one billion, five hundred fifty-six million, forty-five thousand, five hundred seventy-one".