16545230257 has 2 divisors, whose sum is σ = 16545230258. Its totient is φ = 16545230256.

The previous prime is 16545230203. The next prime is 16545230269. The reversal of 16545230257 is 75203254561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10436869921 + 6108360336 = 102161^2 + 78156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545230257 is a prime.

It is a super-3 number, since 3×16545230257³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16545230057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272615128 + 8272615129.

It is an arithmetic number, because the mean of its divisors is an integer number (8272615129).

Almost surely, 2^16545230257 is an apocalyptic number.

It is an amenable number.

16545230257 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545230257 is an equidigital number, since it uses as much as digits as its factorization.

16545230257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 16545230257 in words is "sixteen billion, five hundred forty-five million, two hundred thirty thousand, two hundred fifty-seven".