812081284049 has 12 divisors (see below), whose sum is σ = 985897992384. Its totient is φ = 655124395584.

The previous prime is 812081284037. The next prime is 812081284057. The reversal of 812081284049 is 940482180218.

It is a de Polignac number, because none of the positive numbers 2^k-812081284049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 812081283994 and 812081284012.

It is not an unprimeable number, because it can be changed into a prime (812081283049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200710109 + ... + 200714154.

It is an arithmetic number, because the mean of its divisors is an integer number (82158166032).

Almost surely, 2^812081284049 is an apocalyptic number.

It is an amenable number.

812081284049 is a deficient number, since it is larger than the sum of its proper divisors (173816708335).

812081284049 is a wasteful number, since it uses less digits than its factorization.

812081284049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401424304 (or 401424287 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The spelling of 812081284049 in words is "eight hundred twelve billion, eighty-one million, two hundred eighty-four thousand, forty-nine".