20859173596799 has 8 divisors (see below), whose sum is σ = 20892611097312. Its totient is φ = 20825740666080.

The previous prime is 20859173596771. The next prime is 20859173596823. The reversal of 20859173596799 is 99769537195802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20859173596799 - 2³⁶ = 20790454120063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20859173596759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8053277 + ... + 10323449.

It is an arithmetic number, because the mean of its divisors is an integer number (2611576387164).

Almost surely, 2^{20859173596799} is an apocalyptic number.

20859173596799 is a deficient number, since it is larger than the sum of its proper divisors (33437500513).

20859173596799 is a wasteful number, since it uses less digits than its factorization.

20859173596799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284897.

The product of its (nonzero) digits is 2314720800, while the sum is 80.

The spelling of 20859173596799 in words is "twenty trillion, eight hundred fifty-nine billion, one hundred seventy-three million, five hundred ninety-six thousand, seven hundred ninety-nine".