17740134995549 has 2 divisors, whose sum is σ = 17740134995550. Its totient is φ = 17740134995548.

The previous prime is 17740134995537. The next prime is 17740134995567. The reversal of 17740134995549 is 94559943104771.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17740042643449 + 92352100 = 4211893^2 + 9610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17740134995549 is a prime.

It is a super-2 number, since 2×17740134995549² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17740134998549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8870067497774 + 8870067497775.

It is an arithmetic number, because the mean of its divisors is an integer number (8870067497775).

Almost surely, 2^{17740134995549} is an apocalyptic number.

It is an amenable number.

17740134995549 is a deficient number, since it is larger than the sum of its proper divisors (1).

17740134995549 is an equidigital number, since it uses as much as digits as its factorization.

17740134995549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 171460800, while the sum is 68.

The spelling of 17740134995549 in words is "seventeen trillion, seven hundred forty billion, one hundred thirty-four million, nine hundred ninety-five thousand, five hundred forty-nine".