9566661743 has 2 divisors, whose sum is σ = 9566661744. Its totient is φ = 9566661742.

The previous prime is 9566661697. The next prime is 9566661749. The reversal of 9566661743 is 3471666659.

It is a strong prime.

It is an emirp because it is prime and its reverse (3471666659) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9566661743 - 2¹⁴ = 9566645359 is a prime.

It is a super-3 number, since 3×9566661743³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9566661749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4783330871 + 4783330872.

It is an arithmetic number, because the mean of its divisors is an integer number (4783330872).

Almost surely, 2^9566661743 is an apocalyptic number.

9566661743 is a deficient number, since it is larger than the sum of its proper divisors (1).

9566661743 is an equidigital number, since it uses as much as digits as its factorization.

9566661743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 53.

The square root of 9566661743 is about 97809.3131710882. The cubic root of 9566661743 is about 2122.8540638146.

The spelling of 9566661743 in words is "nine billion, five hundred sixty-six million, six hundred sixty-one thousand, seven hundred forty-three".