68710818553789 has 4 divisors (see below), whose sum is σ = 71698245447456. Its totient is φ = 65723391660124.

The previous prime is 68710818553787. The next prime is 68710818553901. The reversal of 68710818553789 is 98735581801786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68710818553789 - 2¹ = 68710818553787 is a prime.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68710818553787) 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, 1493713446799 + ... + 1493713446844.

It is an arithmetic number, because the mean of its divisors is an integer number (17924561361864).

Almost surely, 2^{68710818553789} is an apocalyptic number.

It is an amenable number.

68710818553789 is a deficient number, since it is larger than the sum of its proper divisors (2987426893667).

68710818553789 is a wasteful number, since it uses less digits than its factorization.

68710818553789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987426893666.

The product of its (nonzero) digits is 812851200, while the sum is 76.

The spelling of 68710818553789 in words is "sixty-eight trillion, seven hundred ten billion, eight hundred eighteen million, five hundred fifty-three thousand, seven hundred eighty-nine".