41345569409 has 2 divisors, whose sum is σ = 41345569410. Its totient is φ = 41345569408.

The previous prime is 41345569387. The next prime is 41345569493. The reversal of 41345569409 is 90496554314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31576223809 + 9769345600 = 177697^2 + 98840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41345569409 is a prime.

It is a super-2 number, since 2×41345569409² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41345529409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20672784704 + 20672784705.

It is an arithmetic number, because the mean of its divisors is an integer number (20672784705).

Almost surely, 2^41345569409 is an apocalyptic number.

It is an amenable number.

41345569409 is a deficient number, since it is larger than the sum of its proper divisors (1).

41345569409 is an equidigital number, since it uses as much as digits as its factorization.

41345569409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 41345569409 in words is "forty-one billion, three hundred forty-five million, five hundred sixty-nine thousand, four hundred nine".