16005645647 has 2 divisors, whose sum is σ = 16005645648. Its totient is φ = 16005645646.

The previous prime is 16005645599. The next prime is 16005645653. The reversal of 16005645647 is 74654650061.

16005645647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16005645647 - 2⁶ = 16005645583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16005645598 and 16005645607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16005648647) 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, 8002822823 + 8002822824.

It is an arithmetic number, because the mean of its divisors is an integer number (8002822824).

Almost surely, 2^16005645647 is an apocalyptic number.

16005645647 is a deficient number, since it is larger than the sum of its proper divisors (1).

16005645647 is an equidigital number, since it uses as much as digits as its factorization.

16005645647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 16005645647 in words is "sixteen billion, five million, six hundred forty-five thousand, six hundred forty-seven".