20213680068216 has 24 divisors (see below), whose sum is σ = 54745383518280. Its totient is φ = 6737893356048.

The previous prime is 20213680068199. The next prime is 20213680068223. The reversal of 20213680068216 is 61286008631202.

20213680068216 is a `hidden beast` number, since 202 + 1 + 368 + 0 + 0 + 6 + 82 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140372778180 + ... + 140372778323.

It is an arithmetic number, because the mean of its divisors is an integer number (2281057646595).

Almost surely, 2^{20213680068216} is an apocalyptic number.

It is an amenable number.

20213680068216 is an abundant number, since it is smaller than the sum of its proper divisors (34531703450064).

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

20213680068216 is a wasteful number, since it uses less digits than its factorization.

20213680068216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280745556515 (or 280745556508 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

Adding to 20213680068216 its reverse (61286008631202), we get a palindrome (81499688699418).

The spelling of 20213680068216 in words is "twenty trillion, two hundred thirteen billion, six hundred eighty million, sixty-eight thousand, two hundred sixteen".