20013773565705 has 16 divisors (see below), whose sum is σ = 32427379956480. Its totient is φ = 10538898484608.

The previous prime is 20013773565703. The next prime is 20013773565727. The reversal of 20013773565705 is 50756537731002.

It is not a de Polignac number, because 20013773565705 - 2¹ = 20013773565703 is a prime.

It is a super-3 number, since 3×20013773565705³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20013773565703) 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 15 ways as a sum of consecutive naturals, for example, 8444629012 + ... + 8444631381.

It is an arithmetic number, because the mean of its divisors is an integer number (2026711247280).

Almost surely, 2^{20013773565705} is an apocalyptic number.

It is an amenable number.

20013773565705 is a deficient number, since it is larger than the sum of its proper divisors (12413606390775).

20013773565705 is a wasteful number, since it uses less digits than its factorization.

20013773565705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16889260480.

The product of its (nonzero) digits is 4630500, while the sum is 51.

The spelling of 20013773565705 in words is "twenty trillion, thirteen billion, seven hundred seventy-three million, five hundred sixty-five thousand, seven hundred five".