812775788968 has 32 divisors (see below), whose sum is σ = 1790380236960. Its totient is φ = 341024806080.

The previous prime is 812775788897. The next prime is 812775789011. The reversal of 812775788968 is 869887577218.

It is a junction number, because it is equal to n+sod(n) for n = 812775788894 and 812775788903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355233030 + ... + 355235317.

It is an arithmetic number, because the mean of its divisors is an integer number (55949382405).

Almost surely, 2^812775788968 is an apocalyptic number.

812775788968 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

812775788968 is an abundant number, since it is smaller than the sum of its proper divisors (977604447992).

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

812775788968 is a wasteful number, since it uses less digits than its factorization.

812775788968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710468377 (or 710468373 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 76.

The spelling of 812775788968 in words is "eight hundred twelve billion, seven hundred seventy-five million, seven hundred eighty-eight thousand, nine hundred sixty-eight".