16868690305871 has 2 divisors, whose sum is σ = 16868690305872. Its totient is φ = 16868690305870.

The previous prime is 16868690305823. The next prime is 16868690305937. The reversal of 16868690305871 is 17850309686861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16868690305871 - 2¹⁴ = 16868690289487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16868690305171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8434345152935 + 8434345152936.

It is an arithmetic number, because the mean of its divisors is an integer number (8434345152936).

Almost surely, 2^{16868690305871} is an apocalyptic number.

16868690305871 is a deficient number, since it is larger than the sum of its proper divisors (1).

16868690305871 is an equidigital number, since it uses as much as digits as its factorization.

16868690305871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104509440, while the sum is 68.

The spelling of 16868690305871 in words is "sixteen trillion, eight hundred sixty-eight billion, six hundred ninety million, three hundred five thousand, eight hundred seventy-one".