20116717651603 has 4 divisors (see below), whose sum is σ = 20116896093040. Its totient is φ = 20116539210168.

The previous prime is 20116717651573. The next prime is 20116717651627. The reversal of 20116717651603 is 30615671761102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20116717651603 - 2¹³ = 20116717643411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116717651673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89051508 + ... + 89277121.

It is an arithmetic number, because the mean of its divisors is an integer number (5029224023260).

Almost surely, 2^{20116717651603} is an apocalyptic number.

20116717651603 is a deficient number, since it is larger than the sum of its proper divisors (178441437).

20116717651603 is a wasteful number, since it uses less digits than its factorization.

20116717651603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178441436.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 20116717651603 in words is "twenty trillion, one hundred sixteen billion, seven hundred seventeen million, six hundred fifty-one thousand, six hundred three".