20688568842204 has 48 divisors (see below), whose sum is σ = 53688954174240. Its totient is φ = 6889513691520.

The previous prime is 20688568842131. The next prime is 20688568842217. The reversal of 20688568842204 is 40224886588602.

It is a happy number.

20688568842204 is a `hidden beast` number, since 2 + 0 + 6 + 8 + 8 + 568 + 8 + 42 + 20 + 4 = 666.

It is a super-2 number, since 2×20688568842204² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92609067 + ... + 92832194.

It is an arithmetic number, because the mean of its divisors is an integer number (1118519878630).

Almost surely, 2^{20688568842204} is an apocalyptic number.

It is an amenable number.

20688568842204 is an abundant number, since it is smaller than the sum of its proper divisors (33000385332036).

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

20688568842204 is a wasteful number, since it uses less digits than its factorization.

20688568842204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185442307 (or 185442299 counting only the distinct ones).

The product of its (nonzero) digits is 94371840, while the sum is 63.

The spelling of 20688568842204 in words is "twenty trillion, six hundred eighty-eight billion, five hundred sixty-eight million, eight hundred forty-two thousand, two hundred four".