76810812664 has 8 divisors (see below), whose sum is σ = 144020273760. Its totient is φ = 38405406328.

The previous prime is 76810812629. The next prime is 76810812691. The reversal of 76810812664 is 46621801867.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4800675784 + ... + 4800675799.

It is an arithmetic number, because the mean of its divisors is an integer number (18002534220).

Almost surely, 2^76810812664 is an apocalyptic number.

It is an amenable number.

76810812664 is a deficient number, since it is larger than the sum of its proper divisors (67209461096).

76810812664 is a wasteful number, since it uses less digits than its factorization.

76810812664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9601351589 (or 9601351585 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 76810812664 in words is "seventy-six billion, eight hundred ten million, eight hundred twelve thousand, six hundred sixty-four".