1324074785821 has 2 divisors, whose sum is σ = 1324074785822. Its totient is φ = 1324074785820.

The previous prime is 1324074785749. The next prime is 1324074785861. The reversal of 1324074785821 is 1285874704231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701255508100 + 622819277721 = 837410^2 + 789189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324074785821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1324074785861) 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 as a sum of consecutive naturals, namely, 662037392910 + 662037392911.

It is an arithmetic number, because the mean of its divisors is an integer number (662037392911).

Almost surely, 2^{1324074785821} is an apocalyptic number.

It is an amenable number.

1324074785821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324074785821 is an equidigital number, since it uses as much as digits as its factorization.

1324074785821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 1324074785821 in words is "one trillion, three hundred twenty-four billion, seventy-four million, seven hundred eighty-five thousand, eight hundred twenty-one".