76810812668 has 12 divisors (see below), whose sum is σ = 134433283320. Its totient is φ = 38401303152.

The previous prime is 76810812629. The next prime is 76810812691. The reversal of 76810812668 is 86621801867.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983483 + ... + 1058706.

It is an arithmetic number, because the mean of its divisors is an integer number (11202773610).

Almost surely, 2^76810812668 is an apocalyptic number.

It is an amenable number.

76810812668 is a deficient number, since it is larger than the sum of its proper divisors (57622470652).

76810812668 is a wasteful number, since it uses less digits than its factorization.

76810812668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051596 (or 2051594 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 76810812668 in words is "seventy-six billion, eight hundred ten million, eight hundred twelve thousand, six hundred sixty-eight".