77766168847688 has 32 divisors (see below), whose sum is σ = 147319458048000. Its totient is φ = 38481005501952.

The previous prime is 77766168847651. The next prime is 77766168847739. The reversal of 77766168847688 is 88674886166777.

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 7 ways as a sum of consecutive naturals, for example, 23100281 + ... + 26251767.

It is an arithmetic number, because the mean of its divisors is an integer number (4603733064000).

Almost surely, 2^{77766168847688} is an apocalyptic number.

It is an amenable number.

77766168847688 is a deficient number, since it is larger than the sum of its proper divisors (69553289200312).

77766168847688 is a wasteful number, since it uses less digits than its factorization.

77766168847688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183389 (or 3183385 counting only the distinct ones).

The product of its digits is 50982027264, while the sum is 89.

The spelling of 77766168847688 in words is "seventy-seven trillion, seven hundred sixty-six billion, one hundred sixty-eight million, eight hundred forty-seven thousand, six hundred eighty-eight".