812050228777 has 2 divisors, whose sum is σ = 812050228778. Its totient is φ = 812050228776.

The previous prime is 812050228757. The next prime is 812050228837. The reversal of 812050228777 is 777822050218.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 769235997721 + 42814231056 = 877061^2 + 206916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812050228777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 812050228777.

It is not a weakly prime, because it can be changed into another prime (812050228747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406025114388 + 406025114389.

It is an arithmetic number, because the mean of its divisors is an integer number (406025114389).

Almost surely, 2^812050228777 is an apocalyptic number.

It is an amenable number.

812050228777 is a deficient number, since it is larger than the sum of its proper divisors (1).

812050228777 is an equidigital number, since it uses as much as digits as its factorization.

812050228777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 878080, while the sum is 49.

The spelling of 812050228777 in words is "eight hundred twelve billion, fifty million, two hundred twenty-eight thousand, seven hundred seventy-seven".