20186668202 has 16 divisors (see below), whose sum is σ = 30625181352. Its totient is φ = 9978571200.

The previous prime is 20186668169. The next prime is 20186668217. The reversal of 20186668202 is 20286668102.

It can be written as a sum of positive squares in 4 ways, for example, as 18763794361 + 1422873841 = 136981^2 + 37721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20186668202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62948 + ... + 210560.

Almost surely, 2^20186668202 is an apocalyptic number.

20186668202 is a deficient number, since it is larger than the sum of its proper divisors (10438513150).

20186668202 is a wasteful number, since it uses less digits than its factorization.

20186668202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148393.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 20186668202 in words is "twenty billion, one hundred eighty-six million, six hundred sixty-eight thousand, two hundred two".