1166361440663 has 2 divisors, whose sum is σ = 1166361440664. Its totient is φ = 1166361440662.

The previous prime is 1166361440603. The next prime is 1166361440707. The reversal of 1166361440663 is 3660441636611.

It is a strong prime.

It is an emirp because it is prime and its reverse (3660441636611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166361440663 - 2¹⁸ = 1166361178519 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166361440603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583180720331 + 583180720332.

It is an arithmetic number, because the mean of its divisors is an integer number (583180720332).

Almost surely, 2^{1166361440663} is an apocalyptic number.

1166361440663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166361440663 is an equidigital number, since it uses as much as digits as its factorization.

1166361440663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 1166361440663 in words is "one trillion, one hundred sixty-six billion, three hundred sixty-one million, four hundred forty thousand, six hundred sixty-three".