20118803136808 has 16 divisors (see below), whose sum is σ = 37830844012500. Its totient is φ = 10030578066816.

The previous prime is 20118803136779. The next prime is 20118803136869. The reversal of 20118803136808 is 80863130881102.

It can be written as a sum of positive squares in 2 ways, for example, as 19654875957924 + 463927178884 = 4433382^2 + 681122^2 .

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, 3602934733 + ... + 3602940316.

Almost surely, 2^{20118803136808} is an apocalyptic number.

It is an amenable number.

20118803136808 is a deficient number, since it is larger than the sum of its proper divisors (17712040875692).

20118803136808 is a wasteful number, since it uses less digits than its factorization.

20118803136808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7205875404 (or 7205875400 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The spelling of 20118803136808 in words is "twenty trillion, one hundred eighteen billion, eight hundred three million, one hundred thirty-six thousand, eight hundred eight".