1717428885749 has 2 divisors, whose sum is σ = 1717428885750. Its totient is φ = 1717428885748.

The previous prime is 1717428885727. The next prime is 1717428885763. The reversal of 1717428885749 is 9475888247171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032601468900 + 684827416849 = 1016170^2 + 827543^2 .

It is a cyclic number.

It is not a de Polignac number, because 1717428885749 - 2¹⁶ = 1717428820213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1717428885719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858714442874 + 858714442875.

It is an arithmetic number, because the mean of its divisors is an integer number (858714442875).

Almost surely, 2^{1717428885749} is an apocalyptic number.

It is an amenable number.

1717428885749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1717428885749 is an equidigital number, since it uses as much as digits as its factorization.

1717428885749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252887040, while the sum is 71.

The spelling of 1717428885749 in words is "one trillion, seven hundred seventeen billion, four hundred twenty-eight million, eight hundred eighty-five thousand, seven hundred forty-nine".