68065652865 has 16 divisors (see below), whose sum is σ = 124462908288. Its totient is φ = 31115726976.

The previous prime is 68065652791. The next prime is 68065652869. The reversal of 68065652865 is 56825656086.

It is not a de Polignac number, because 68065652865 - 2¹¹ = 68065650817 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 324122052 + ... + 324122261.

It is an arithmetic number, because the mean of its divisors is an integer number (7778931768).

Almost surely, 2^68065652865 is an apocalyptic number.

It is an amenable number.

68065652865 is a deficient number, since it is larger than the sum of its proper divisors (56397255423).

68065652865 is a wasteful number, since it uses less digits than its factorization.

68065652865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648244328.

The product of its (nonzero) digits is 20736000, while the sum is 57.

The spelling of 68065652865 in words is "sixty-eight billion, sixty-five million, six hundred fifty-two thousand, eight hundred sixty-five".