68965806399 has 16 divisors (see below), whose sum is σ = 107653943040. Its totient is φ = 38447835840.

The previous prime is 68965806379. The next prime is 68965806457. The reversal of 68965806399 is 99360856986.

It is not a de Polignac number, because 68965806399 - 2¹¹ = 68965804351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68965806379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40048969 + ... + 40050690.

It is an arithmetic number, because the mean of its divisors is an integer number (6728371440).

Almost surely, 2^68965806399 is an apocalyptic number.

68965806399 is a deficient number, since it is larger than the sum of its proper divisors (38688136641).

68965806399 is a wasteful number, since it uses less digits than its factorization.

68965806399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80099710.

The product of its (nonzero) digits is 151165440, while the sum is 69.

The spelling of 68965806399 in words is "sixty-eight billion, nine hundred sixty-five million, eight hundred six thousand, three hundred ninety-nine".