77786618228066 has 16 divisors (see below), whose sum is σ = 127287517068000. Its totient is φ = 35357463850080.

The previous prime is 77786618228051. The next prime is 77786618228071. The reversal of 77786618228066 is 66082281668777.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77786618227984 and 77786618228002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4781105 + ... + 13357851.

It is an arithmetic number, because the mean of its divisors is an integer number (7955469816750).

Almost surely, 2^{77786618228066} is an apocalyptic number.

77786618228066 is a deficient number, since it is larger than the sum of its proper divisors (49500898839934).

77786618228066 is a wasteful number, since it uses less digits than its factorization.

77786618228066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989009.

The product of its (nonzero) digits is 910393344, while the sum is 74.

The spelling of 77786618228066 in words is "seventy-seven trillion, seven hundred eighty-six billion, six hundred eighteen million, two hundred twenty-eight thousand, sixty-six".