812041787233 has 2 divisors, whose sum is σ = 812041787234. Its totient is φ = 812041787232.

The previous prime is 812041787159. The next prime is 812041787243. The reversal of 812041787233 is 332787140218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 406644709969 + 405397077264 = 637687^2 + 636708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812041787233 is a prime.

It is not a weakly prime, because it can be changed into another prime (812041787243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406020893616 + 406020893617.

It is an arithmetic number, because the mean of its divisors is an integer number (406020893617).

Almost surely, 2^812041787233 is an apocalyptic number.

It is an amenable number.

812041787233 is a deficient number, since it is larger than the sum of its proper divisors (1).

812041787233 is an equidigital number, since it uses as much as digits as its factorization.

812041787233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 812041787233 in words is "eight hundred twelve billion, forty-one million, seven hundred eighty-seven thousand, two hundred thirty-three".