201719201027 has 2 divisors, whose sum is σ = 201719201028. Its totient is φ = 201719201026.

The previous prime is 201719200973. The next prime is 201719201077. The reversal of 201719201027 is 720102917102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201719201027 - 2¹⁴ = 201719184643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201719200984 and 201719201002.

It is not a weakly prime, because it can be changed into another prime (201719201077) 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, 100859600513 + 100859600514.

It is an arithmetic number, because the mean of its divisors is an integer number (100859600514).

Almost surely, 2^201719201027 is an apocalyptic number.

201719201027 is a deficient number, since it is larger than the sum of its proper divisors (1).

201719201027 is an equidigital number, since it uses as much as digits as its factorization.

201719201027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 201719201027 in words is "two hundred one billion, seven hundred nineteen million, two hundred one thousand, twenty-seven".