201996727055917 has 2 divisors, whose sum is σ = 201996727055918. Its totient is φ = 201996727055916.

The previous prime is 201996727055911. The next prime is 201996727055939. The reversal of 201996727055917 is 719550727699102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101756062431241 + 100240664624676 = 10087421^2 + 10012026^2 .

It is a cyclic number.

It is not a de Polignac number, because 201996727055917 - 2¹⁹ = 201996726531629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201996727055911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100998363527958 + 100998363527959.

It is an arithmetic number, because the mean of its divisors is an integer number (100998363527959).

Almost surely, 2^{201996727055917} is an apocalyptic number.

It is an amenable number.

201996727055917 is a deficient number, since it is larger than the sum of its proper divisors (1).

201996727055917 is an equidigital number, since it uses as much as digits as its factorization.

201996727055917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150028200, while the sum is 70.

The spelling of 201996727055917 in words is "two hundred one trillion, nine hundred ninety-six billion, seven hundred twenty-seven million, fifty-five thousand, nine hundred seventeen".