18668516700202 has 8 divisors (see below), whose sum is σ = 28007645962500. Its totient is φ = 9332634712704.

The previous prime is 18668516700193. The next prime is 18668516700263. The reversal of 18668516700202 is 20200761586681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16915543348201 + 1752973352001 = 4112851^2 + 1323999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18668516700202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811804327 + ... + 811827322.

Almost surely, 2^{18668516700202} is an apocalyptic number.

18668516700202 is a deficient number, since it is larger than the sum of its proper divisors (9339129262298).

18668516700202 is a wasteful number, since it uses less digits than its factorization.

18668516700202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623637400.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 18668516700202 in words is "eighteen trillion, six hundred sixty-eight billion, five hundred sixteen million, seven hundred thousand, two hundred two".