16686870020203 has 2 divisors, whose sum is σ = 16686870020204. Its totient is φ = 16686870020202.

The previous prime is 16686870020179. The next prime is 16686870020231. The reversal of 16686870020203 is 30202007868661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16686870020203 - 2³⁷ = 16549431066731 is a prime.

It is a super-2 number, since 2×16686870020203² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16686870020243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8343435010101 + 8343435010102.

It is an arithmetic number, because the mean of its divisors is an integer number (8343435010102).

Almost surely, 2^{16686870020203} is an apocalyptic number.

16686870020203 is a deficient number, since it is larger than the sum of its proper divisors (1).

16686870020203 is an equidigital number, since it uses as much as digits as its factorization.

16686870020203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 49.

Adding to 16686870020203 its reverse (30202007868661), we get a palindrome (46888877888864).

The spelling of 16686870020203 in words is "sixteen trillion, six hundred eighty-six billion, eight hundred seventy million, twenty thousand, two hundred three".