784636226196481 has 2 divisors, whose sum is σ = 784636226196482. Its totient is φ = 784636226196480.

The previous prime is 784636226196421. The next prime is 784636226196521. The reversal of 784636226196481 is 184691622636487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574052129578225 + 210584096618256 = 23959385^2 + 14511516^2 .

It is an emirp because it is prime and its reverse (184691622636487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 784636226196481 - 2⁷ = 784636226196353 is a prime.

It is a super-2 number, since 2×784636226196481² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (784636226196421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392318113098240 + 392318113098241.

It is an arithmetic number, because the mean of its divisors is an integer number (392318113098241).

Almost surely, 2^{784636226196481} is an apocalyptic number.

It is an amenable number.

784636226196481 is a deficient number, since it is larger than the sum of its proper divisors (1).

784636226196481 is an equidigital number, since it uses as much as digits as its factorization.

784636226196481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1003290624, while the sum is 73.

The spelling of 784636226196481 in words is "seven hundred eighty-four trillion, six hundred thirty-six billion, two hundred twenty-six million, one hundred ninety-six thousand, four hundred eighty-one".