324778320073 has 2 divisors, whose sum is σ = 324778320074. Its totient is φ = 324778320072.

The previous prime is 324778320047. The next prime is 324778320137. The reversal of 324778320073 is 370023877423.

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., 300651532489 + 24126787584 = 548317^2 + 155328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324778320073 is a prime.

It is not a weakly prime, because it can be changed into another prime (324778326073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162389160036 + 162389160037.

It is an arithmetic number, because the mean of its divisors is an integer number (162389160037).

Almost surely, 2^324778320073 is an apocalyptic number.

It is an amenable number.

324778320073 is a deficient number, since it is larger than the sum of its proper divisors (1).

324778320073 is an equidigital number, since it uses as much as digits as its factorization.

324778320073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 46.

The spelling of 324778320073 in words is "three hundred twenty-four billion, seven hundred seventy-eight million, three hundred twenty thousand, seventy-three".