68717969277 has 4 divisors (see below), whose sum is σ = 91623959040. Its totient is φ = 45811979516.

The previous prime is 68717969249. The next prime is 68717969317. The reversal of 68717969277 is 77296971786.

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 68717969277 - 2¹¹ = 68717967229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68717969777) 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, 11452994877 + ... + 11452994882.

It is an arithmetic number, because the mean of its divisors is an integer number (22905989760).

Almost surely, 2^68717969277 is an apocalyptic number.

It is an amenable number.

68717969277 is a deficient number, since it is larger than the sum of its proper divisors (22905989763).

68717969277 is a wasteful number, since it uses less digits than its factorization.

68717969277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22905989762.

The product of its digits is 112021056, while the sum is 69.

The spelling of 68717969277 in words is "sixty-eight billion, seven hundred seventeen million, nine hundred sixty-nine thousand, two hundred seventy-seven".