76664783866 has 32 divisors (see below), whose sum is σ = 126840603456. Its totient is φ = 34462560000.

The previous prime is 76664783863. The next prime is 76664783891. The reversal of 76664783866 is 66838746667.

It is not an unprimeable number, because it can be changed into a prime (76664783863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1938001 + ... + 1977163.

It is an arithmetic number, because the mean of its divisors is an integer number (3963768858).

Almost surely, 2^76664783866 is an apocalyptic number.

76664783866 is a deficient number, since it is larger than the sum of its proper divisors (50175819590).

76664783866 is a wasteful number, since it uses less digits than its factorization.

76664783866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40158.

The product of its digits is 292626432, while the sum is 67.

The spelling of 76664783866 in words is "seventy-six billion, six hundred sixty-four million, seven hundred eighty-three thousand, eight hundred sixty-six".