16301720573 has 2 divisors, whose sum is σ = 16301720574. Its totient is φ = 16301720572.

The previous prime is 16301720509. The next prime is 16301720579. The reversal of 16301720573 is 37502710361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13423076164 + 2878644409 = 115858^2 + 53653^2 .

It is a cyclic number.

It is not a de Polignac number, because 16301720573 - 2⁶ = 16301720509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16301720579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8150860286 + 8150860287.

It is an arithmetic number, because the mean of its divisors is an integer number (8150860287).

Almost surely, 2^16301720573 is an apocalyptic number.

It is an amenable number.

16301720573 is a deficient number, since it is larger than the sum of its proper divisors (1).

16301720573 is an equidigital number, since it uses as much as digits as its factorization.

16301720573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The spelling of 16301720573 in words is "sixteen billion, three hundred one million, seven hundred twenty thousand, five hundred seventy-three".