16573290281 has 2 divisors, whose sum is σ = 16573290282. Its totient is φ = 16573290280.

The previous prime is 16573290257. The next prime is 16573290373. The reversal of 16573290281 is 18209237561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10473680281 + 6099610000 = 102341^2 + 78100^2 .

It is a cyclic number.

It is not a de Polignac number, because 16573290281 - 2¹⁴ = 16573273897 is a prime.

It is a super-2 number, since 2×16573290281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16573290211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8286645140 + 8286645141.

It is an arithmetic number, because the mean of its divisors is an integer number (8286645141).

Almost surely, 2^16573290281 is an apocalyptic number.

It is an amenable number.

16573290281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16573290281 is an equidigital number, since it uses as much as digits as its factorization.

16573290281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 16573290281 in words is "sixteen billion, five hundred seventy-three million, two hundred ninety thousand, two hundred eighty-one".