16656306487 has 2 divisors, whose sum is σ = 16656306488. Its totient is φ = 16656306486.

The previous prime is 16656306437. The next prime is 16656306577. The reversal of 16656306487 is 78460365661.

16656306487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16656306487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16656306437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8328153243 + 8328153244.

It is an arithmetic number, because the mean of its divisors is an integer number (8328153244).

Almost surely, 2^16656306487 is an apocalyptic number.

16656306487 is a deficient number, since it is larger than the sum of its proper divisors (1).

16656306487 is an equidigital number, since it uses as much as digits as its factorization.

16656306487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 16656306487 in words is "sixteen billion, six hundred fifty-six million, three hundred six thousand, four hundred eighty-seven".