1166654442673 has 2 divisors, whose sum is σ = 1166654442674. Its totient is φ = 1166654442672.

The previous prime is 1166654442659. The next prime is 1166654442677. The reversal of 1166654442673 is 3762444566611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1081385770609 + 85268672064 = 1039897^2 + 292008^2 .

It is an emirp because it is prime and its reverse (3762444566611) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166654442673 is a prime.

It is a super-2 number, since 2×1166654442673² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1166654442677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583327221336 + 583327221337.

It is an arithmetic number, because the mean of its divisors is an integer number (583327221337).

Almost surely, 2^{1166654442673} is an apocalyptic number.

It is an amenable number.

1166654442673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166654442673 is an equidigital number, since it uses as much as digits as its factorization.

1166654442673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 55.

The spelling of 1166654442673 in words is "one trillion, one hundred sixty-six billion, six hundred fifty-four million, four hundred forty-two thousand, six hundred seventy-three".