68716691735 has 4 divisors (see below), whose sum is σ = 82460030088. Its totient is φ = 54973353384.

The previous prime is 68716691717. The next prime is 68716691749. The reversal of 68716691735 is 53719661786.

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

It is a cyclic number.

It is not a de Polignac number, because 68716691735 - 2²⁶ = 68649582871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6871669169 + ... + 6871669178.

It is an arithmetic number, because the mean of its divisors is an integer number (20615007522).

Almost surely, 2^68716691735 is an apocalyptic number.

68716691735 is a deficient number, since it is larger than the sum of its proper divisors (13743338353).

68716691735 is a wasteful number, since it uses less digits than its factorization.

68716691735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13743338352.

The product of its digits is 11430720, while the sum is 59.

The spelling of 68716691735 in words is "sixty-eight billion, seven hundred sixteen million, six hundred ninety-one thousand, seven hundred thirty-five".