41563781665 has 8 divisors (see below), whose sum is σ = 57001757760. Its totient is φ = 28500878832.

The previous prime is 41563781663. The next prime is 41563781669. The reversal of 41563781665 is 56618736514.

41563781665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41563781665 - 2¹ = 41563781663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41563781663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593768275 + ... + 593768344.

It is an arithmetic number, because the mean of its divisors is an integer number (7125219720).

Almost surely, 2^41563781665 is an apocalyptic number.

It is an amenable number.

41563781665 is a deficient number, since it is larger than the sum of its proper divisors (15437976095).

41563781665 is a wasteful number, since it uses less digits than its factorization.

41563781665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187536631.

The product of its digits is 3628800, while the sum is 52.

The spelling of 41563781665 in words is "forty-one billion, five hundred sixty-three million, seven hundred eighty-one thousand, six hundred sixty-five".