20868512138076 has 24 divisors (see below), whose sum is σ = 48693567437200. Its totient is φ = 6956117505792.

The previous prime is 20868512138057. The next prime is 20868512138081. The reversal of 20868512138076 is 67083121586802.

It is a congruent number.

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, 5000251 + ... + 8169426.

Almost surely, 2^{20868512138076} is an apocalyptic number.

It is an amenable number.

20868512138076 is an abundant number, since it is smaller than the sum of its proper divisors (27825055299124).

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

20868512138076 is a wasteful number, since it uses less digits than its factorization.

20868512138076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13301733 (or 13301731 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 20868512138076 in words is "twenty trillion, eight hundred sixty-eight billion, five hundred twelve million, one hundred thirty-eight thousand, seventy-six".