68065652866 has 4 divisors (see below), whose sum is σ = 102098479302. Its totient is φ = 34032826432.

The previous prime is 68065652791. The next prime is 68065652869. The reversal of 68065652866 is 66825656086.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 62607546225 + 5458106641 = 250215^2 + 73879^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68065652866.

It is not an unprimeable number, because it can be changed into a prime (68065652869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17016413215 + ... + 17016413218.

Almost surely, 2^68065652866 is an apocalyptic number.

68065652866 is a deficient number, since it is larger than the sum of its proper divisors (34032826436).

68065652866 is a wasteful number, since it uses less digits than its factorization.

68065652866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34032826435.

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 68065652866 in words is "sixty-eight billion, sixty-five million, six hundred fifty-two thousand, eight hundred sixty-six".