1166188816453 has 2 divisors, whose sum is σ = 1166188816454. Its totient is φ = 1166188816452.

The previous prime is 1166188816447. The next prime is 1166188816613. The reversal of 1166188816453 is 3546188816611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163761973284 + 2426843169 = 1078778^2 + 49263^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166188816453 - 2¹³ = 1166188808261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166188811453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583094408226 + 583094408227.

It is an arithmetic number, because the mean of its divisors is an integer number (583094408227).

Almost surely, 2^{1166188816453} is an apocalyptic number.

It is an amenable number.

1166188816453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166188816453 is an equidigital number, since it uses as much as digits as its factorization.

1166188816453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 58.

The spelling of 1166188816453 in words is "one trillion, one hundred sixty-six billion, one hundred eighty-eight million, eight hundred sixteen thousand, four hundred fifty-three".