16868502020387 has 2 divisors, whose sum is σ = 16868502020388. Its totient is φ = 16868502020386.

The previous prime is 16868502020317. The next prime is 16868502020399. The reversal of 16868502020387 is 78302020586861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16868502020387 - 2¹⁰ = 16868502019363 is a prime.

It is not a weakly prime, because it can be changed into another prime (16868502020317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8434251010193 + 8434251010194.

It is an arithmetic number, because the mean of its divisors is an integer number (8434251010194).

Almost surely, 2^{16868502020387} is an apocalyptic number.

16868502020387 is a deficient number, since it is larger than the sum of its proper divisors (1).

16868502020387 is an equidigital number, since it uses as much as digits as its factorization.

16868502020387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 16868502020387 in words is "sixteen trillion, eight hundred sixty-eight billion, five hundred two million, twenty thousand, three hundred eighty-seven".