766828196985 has 16 divisors (see below), whose sum is σ = 1260085254336. Its totient is φ = 397921658688.

The previous prime is 766828196971. The next prime is 766828197019. The reversal of 766828196985 is 589691828667.

It is not a de Polignac number, because 766828196985 - 2¹⁰ = 766828195961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690835659 + ... + 690836768.

It is an arithmetic number, because the mean of its divisors is an integer number (78755328396).

Almost surely, 2^766828196985 is an apocalyptic number.

It is an amenable number.

766828196985 is a deficient number, since it is larger than the sum of its proper divisors (493257057351).

766828196985 is a wasteful number, since it uses less digits than its factorization.

766828196985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381672472.

The product of its digits is 627056640, while the sum is 75.

The spelling of 766828196985 in words is "seven hundred sixty-six billion, eight hundred twenty-eight million, one hundred ninety-six thousand, nine hundred eighty-five".