16660545313 has 2 divisors, whose sum is σ = 16660545314. Its totient is φ = 16660545312.

The previous prime is 16660545299. The next prime is 16660545323. The reversal of 16660545313 is 31354506661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13190981904 + 3469563409 = 114852^2 + 58903^2 .

It is a cyclic number.

It is not a de Polignac number, because 16660545313 - 2¹⁷ = 16660414241 is a prime.

It is not a weakly prime, because it can be changed into another prime (16660545323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330272656 + 8330272657.

It is an arithmetic number, because the mean of its divisors is an integer number (8330272657).

Almost surely, 2^16660545313 is an apocalyptic number.

It is an amenable number.

16660545313 is a deficient number, since it is larger than the sum of its proper divisors (1).

16660545313 is an equidigital number, since it uses as much as digits as its factorization.

16660545313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 16660545313 in words is "sixteen billion, six hundred sixty million, five hundred forty-five thousand, three hundred thirteen".