77768716786 has 8 divisors (see below), whose sum is σ = 117005502384. Its totient is φ = 38766882660.

The previous prime is 77768716763. The next prime is 77768716789. The reversal of 77768716786 is 68761786777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77768716789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58737040 + ... + 58738363.

It is an arithmetic number, because the mean of its divisors is an integer number (14625687798).

Almost surely, 2^77768716786 is an apocalyptic number.

77768716786 is a deficient number, since it is larger than the sum of its proper divisors (39236785598).

77768716786 is a wasteful number, since it uses less digits than its factorization.

77768716786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117475736.

The product of its digits is 232339968, while the sum is 70.

The spelling of 77768716786 in words is "seventy-seven billion, seven hundred sixty-eight million, seven hundred sixteen thousand, seven hundred eighty-six".