20688286875628 has 12 divisors (see below), whose sum is σ = 37046467196200. Its totient is φ = 10103581962432.

The previous prime is 20688286875593. The next prime is 20688286875649. The reversal of 20688286875628 is 82657868288602.

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, 60140368653 + ... + 60140368996.

Almost surely, 2^{20688286875628} is an apocalyptic number.

It is an amenable number.

20688286875628 is a deficient number, since it is larger than the sum of its proper divisors (16358180320572).

20688286875628 is a wasteful number, since it uses less digits than its factorization.

20688286875628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120280737696 (or 120280737694 counting only the distinct ones).

The product of its (nonzero) digits is 1981808640, while the sum is 76.

The spelling of 20688286875628 in words is "twenty trillion, six hundred eighty-eight billion, two hundred eighty-six million, eight hundred seventy-five thousand, six hundred twenty-eight".