41556645331 has 2 divisors, whose sum is σ = 41556645332. Its totient is φ = 41556645330.

The previous prime is 41556645281. The next prime is 41556645353. The reversal of 41556645331 is 13354665514.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41556645331 - 2⁹ = 41556644819 is a prime.

It is a super-2 number, since 2×41556645331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41556645371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20778322665 + 20778322666.

It is an arithmetic number, because the mean of its divisors is an integer number (20778322666).

Almost surely, 2^41556645331 is an apocalyptic number.

41556645331 is a deficient number, since it is larger than the sum of its proper divisors (1).

41556645331 is an equidigital number, since it uses as much as digits as its factorization.

41556645331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648000, while the sum is 43.

The spelling of 41556645331 in words is "forty-one billion, five hundred fifty-six million, six hundred forty-five thousand, three hundred thirty-one".