16660327650787 has 2 divisors, whose sum is σ = 16660327650788. Its totient is φ = 16660327650786.

The previous prime is 16660327650739. The next prime is 16660327650797. The reversal of 16660327650787 is 78705672306661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16660327650787 is a prime.

It is not a weakly prime, because it can be changed into another prime (16660327650797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330163825393 + 8330163825394.

It is an arithmetic number, because the mean of its divisors is an integer number (8330163825394).

Almost surely, 2^{16660327650787} is an apocalyptic number.

16660327650787 is a deficient number, since it is larger than the sum of its proper divisors (1).

16660327650787 is an equidigital number, since it uses as much as digits as its factorization.

16660327650787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 106686720, while the sum is 64.

The spelling of 16660327650787 in words is "sixteen trillion, six hundred sixty billion, three hundred twenty-seven million, six hundred fifty thousand, seven hundred eighty-seven".