16686870020202 has 16 divisors (see below), whose sum is σ = 33373829345472. Its totient is φ = 5562275122560.

The previous prime is 16686870020179. The next prime is 16686870020203. The reversal of 16686870020202 is 20202007868661.

It is a super-2 number, since 2×16686870020202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16686870020203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155943 + ... + 5891514.

It is an arithmetic number, because the mean of its divisors is an integer number (2085864334092).

Almost surely, 2^{16686870020202} is an apocalyptic number.

16686870020202 is an abundant number, since it is smaller than the sum of its proper divisors (16686959325270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16686870020202 is a wasteful number, since it uses less digits than its factorization.

16686870020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442093.

The product of its (nonzero) digits is 774144, while the sum is 48.

Adding to 16686870020202 its reverse (20202007868661), we get a palindrome (36888877888863).

The spelling of 16686870020202 in words is "sixteen trillion, six hundred eighty-six billion, eight hundred seventy million, twenty thousand, two hundred two".