41555563809 has 4 divisors (see below), whose sum is σ = 55407418416. Its totient is φ = 27703709204.

The previous prime is 41555563781. The next prime is 41555563813. The reversal of 41555563809 is 90836555514.

41555563809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41555563809 - 2⁹ = 41555563297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41555561809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6925927299 + ... + 6925927304.

It is an arithmetic number, because the mean of its divisors is an integer number (13851854604).

Almost surely, 2^41555563809 is an apocalyptic number.

It is an amenable number.

41555563809 is a deficient number, since it is larger than the sum of its proper divisors (13851854607).

41555563809 is a wasteful number, since it uses less digits than its factorization.

41555563809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13851854606.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 41555563809 in words is "forty-one billion, five hundred fifty-five million, five hundred sixty-three thousand, eight hundred nine".