812427774312 has 64 divisors (see below), whose sum is σ = 2532242419200. Its totient is φ = 211020200640.

The previous prime is 812427774293. The next prime is 812427774313. The reversal of 812427774312 is 213477724218.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (812427774313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219810862 + ... + 219814557.

It is an arithmetic number, because the mean of its divisors is an integer number (39566287800).

Almost surely, 2^812427774312 is an apocalyptic number.

It is an amenable number.

812427774312 is an abundant number, since it is smaller than the sum of its proper divisors (1719814644888).

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

812427774312 is a wasteful number, since it uses less digits than its factorization.

812427774312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439625446 (or 439625442 counting only the distinct ones).

The product of its digits is 1053696, while the sum is 48.

The spelling of 812427774312 in words is "eight hundred twelve billion, four hundred twenty-seven million, seven hundred seventy-four thousand, three hundred twelve".