20655020015143 has 2 divisors, whose sum is σ = 20655020015144. Its totient is φ = 20655020015142.

The previous prime is 20655020015117. The next prime is 20655020015213. The reversal of 20655020015143 is 34151002055602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20655020015143 - 2¹⁷ = 20655019884071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20655020015099 and 20655020015108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20655020015743) 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 as a sum of consecutive naturals, namely, 10327510007571 + 10327510007572.

It is an arithmetic number, because the mean of its divisors is an integer number (10327510007572).

Almost surely, 2^{20655020015143} is an apocalyptic number.

20655020015143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20655020015143 is an equidigital number, since it uses as much as digits as its factorization.

20655020015143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 20655020015143 in words is "twenty trillion, six hundred fifty-five billion, twenty million, fifteen thousand, one hundred forty-three".