68739855893785 has 16 divisors (see below), whose sum is σ = 83259715516992. Its totient is φ = 54477304446400.

The previous prime is 68739855893773. The next prime is 68739855893789. The reversal of 68739855893785 is 58739855893786.

68739855893785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68739855893785 - 2⁹ = 68739855893273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68739855893785.

It is not an unprimeable number, because it can be changed into a prime (68739855893789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47963295 + ... + 49375675.

It is an arithmetic number, because the mean of its divisors is an integer number (5203732219812).

Almost surely, 2^{68739855893785} is an apocalyptic number.

It is an amenable number.

68739855893785 is a deficient number, since it is larger than the sum of its proper divisors (14519859623207).

68739855893785 is a wasteful number, since it uses less digits than its factorization.

68739855893785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503464.

The product of its digits is 109734912000, while the sum is 91.

Subtracting from 68739855893785 its reverse (58739855893786), we obtain a palindrome (9999999999999).

The spelling of 68739855893785 in words is "sixty-eight trillion, seven hundred thirty-nine billion, eight hundred fifty-five million, eight hundred ninety-three thousand, seven hundred eighty-five".