20173369047311 has 4 divisors (see below), whose sum is σ = 21050472049392. Its totient is φ = 19296266045232.

The previous prime is 20173369047259. The next prime is 20173369047373. The reversal of 20173369047311 is 11374096337102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20173369047311 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 (20173369040311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438551501006 + ... + 438551501051.

It is an arithmetic number, because the mean of its divisors is an integer number (5262618012348).

Almost surely, 2^{20173369047311} is an apocalyptic number.

20173369047311 is a deficient number, since it is larger than the sum of its proper divisors (877103002081).

20173369047311 is an equidigital number, since it uses as much as digits as its factorization.

20173369047311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877103002080.

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 20173369047311 in words is "twenty trillion, one hundred seventy-three billion, three hundred sixty-nine million, forty-seven thousand, three hundred eleven".