1717725921101 has 2 divisors, whose sum is σ = 1717725921102. Its totient is φ = 1717725921100.

The previous prime is 1717725921071. The next prime is 1717725921137. The reversal of 1717725921101 is 1011295277171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1373478522025 + 344247399076 = 1171955^2 + 586726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1717725921101 - 2¹⁴ = 1717725904717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1717725021101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858862960550 + 858862960551.

It is an arithmetic number, because the mean of its divisors is an integer number (858862960551).

Almost surely, 2^{1717725921101} is an apocalyptic number.

It is an amenable number.

1717725921101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1717725921101 is an equidigital number, since it uses as much as digits as its factorization.

1717725921101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61740, while the sum is 44.

The spelling of 1717725921101 in words is "one trillion, seven hundred seventeen billion, seven hundred twenty-five million, nine hundred twenty-one thousand, one hundred one".