16396217687 has 2 divisors, whose sum is σ = 16396217688. Its totient is φ = 16396217686.

The previous prime is 16396217683. The next prime is 16396217741. The reversal of 16396217687 is 78671269361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16396217687 - 2² = 16396217683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16396217683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8198108843 + 8198108844.

It is an arithmetic number, because the mean of its divisors is an integer number (8198108844).

Almost surely, 2^16396217687 is an apocalyptic number.

16396217687 is a deficient number, since it is larger than the sum of its proper divisors (1).

16396217687 is an equidigital number, since it uses as much as digits as its factorization.

16396217687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 16396217687 in words is "sixteen billion, three hundred ninety-six million, two hundred seventeen thousand, six hundred eighty-seven".