68665582241 has 4 divisors (see below), whose sum is σ = 68884961412. Its totient is φ = 68446203072.

The previous prime is 68665582201. The next prime is 68665582289. The reversal of 68665582241 is 14228556686.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9881155216 + 58784427025 = 99404^2 + 242455^2 .

It is a cyclic number.

It is not a de Polignac number, because 68665582241 - 2³⁰ = 67591840417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68665582201) 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, 109689116 + ... + 109689741.

It is an arithmetic number, because the mean of its divisors is an integer number (17221240353).

Almost surely, 2^68665582241 is an apocalyptic number.

It is an amenable number.

68665582241 is a deficient number, since it is larger than the sum of its proper divisors (219379171).

68665582241 is a wasteful number, since it uses less digits than its factorization.

68665582241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219379170.

The product of its digits is 5529600, while the sum is 53.

The spelling of 68665582241 in words is "sixty-eight billion, six hundred sixty-five million, five hundred eighty-two thousand, two hundred forty-one".