66541717041 has 8 divisors (see below), whose sum is σ = 88748810784. Its totient is φ = 44347884000.

The previous prime is 66541717037. The next prime is 66541717061. The reversal of 66541717041 is 14071714566.

It is a happy number.

66541717041 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 not a de Polignac number, because 66541717041 - 2² = 66541717037 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 66541716984 and 66541717002.

It is not an unprimeable number, because it can be changed into a prime (66541717061) 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, 3303460 + ... + 3323541.

It is an arithmetic number, because the mean of its divisors is an integer number (11093601348).

Almost surely, 2^66541717041 is an apocalyptic number.

It is an amenable number.

66541717041 is a deficient number, since it is larger than the sum of its proper divisors (22207093743).

66541717041 is a wasteful number, since it uses less digits than its factorization.

66541717041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630351.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 66541717041 in words is "sixty-six billion, five hundred forty-one million, seven hundred seventeen thousand, forty-one".