16600871891 has 2 divisors, whose sum is σ = 16600871892. Its totient is φ = 16600871890.

The previous prime is 16600871867. The next prime is 16600871951. The reversal of 16600871891 is 19817800661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16600871891 - 2⁶ = 16600871827 is a prime.

It is not a weakly prime, because it can be changed into another prime (16600871801) 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, 8300435945 + 8300435946.

It is an arithmetic number, because the mean of its divisors is an integer number (8300435946).

Almost surely, 2^16600871891 is an apocalyptic number.

16600871891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16600871891 is an equidigital number, since it uses as much as digits as its factorization.

16600871891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 47.

The spelling of 16600871891 in words is "sixteen billion, six hundred million, eight hundred seventy-one thousand, eight hundred ninety-one".