1717680092561 has 2 divisors, whose sum is σ = 1717680092562. Its totient is φ = 1717680092560.

The previous prime is 1717680092537. The next prime is 1717680092593. The reversal of 1717680092561 is 1652900867171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1710170830225 + 7509262336 = 1307735^2 + 86656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1717680092561 - 2¹⁸ = 1717679830417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1717680092861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858840046280 + 858840046281.

It is an arithmetic number, because the mean of its divisors is an integer number (858840046281).

Almost surely, 2^{1717680092561} is an apocalyptic number.

It is an amenable number.

1717680092561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1717680092561 is an equidigital number, since it uses as much as digits as its factorization.

1717680092561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 1717680092561 in words is "one trillion, seven hundred seventeen billion, six hundred eighty million, ninety-two thousand, five hundred sixty-one".