77420793876 has 12 divisors (see below), whose sum is σ = 180648519072. Its totient is φ = 25806931288.

The previous prime is 77420793859. The next prime is 77420793887. The reversal of 77420793876 is 67839702477.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3225866400 + ... + 3225866423.

It is an arithmetic number, because the mean of its divisors is an integer number (15054043256).

Almost surely, 2^77420793876 is an apocalyptic number.

It is an amenable number.

77420793876 is an abundant number, since it is smaller than the sum of its proper divisors (103227725196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77420793876 is a wasteful number, since it uses less digits than its factorization.

77420793876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6451732830 (or 6451732828 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 60.

The spelling of 77420793876 in words is "seventy-seven billion, four hundred twenty million, seven hundred ninety-three thousand, eight hundred seventy-six".