20073688728191 has 16 divisors (see below), whose sum is σ = 23060750356800. Its totient is φ = 17116479111168.

The previous prime is 20073688728157. The next prime is 20073688728251. The reversal of 20073688728191 is 19182788637002.

It is a cyclic number.

It is not a de Polignac number, because 20073688728191 - 2¹⁰ = 20073688727167 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 (20073688728101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70013015 + ... + 70299143.

It is an arithmetic number, because the mean of its divisors is an integer number (1441296897300).

Almost surely, 2^{20073688728191} is an apocalyptic number.

20073688728191 is a deficient number, since it is larger than the sum of its proper divisors (2987061628609).

20073688728191 is a wasteful number, since it uses less digits than its factorization.

20073688728191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338258.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 20073688728191 in words is "twenty trillion, seventy-three billion, six hundred eighty-eight million, seven hundred twenty-eight thousand, one hundred ninety-one".