1166149453457 has 2 divisors, whose sum is σ = 1166149453458. Its totient is φ = 1166149453456.

The previous prime is 1166149453411. The next prime is 1166149453487. The reversal of 1166149453457 is 7543549416611.

It is a Cunningham number, because it is equal to 1079884²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1166149453456 + 1 = 1079884^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166149453457 - 2⁸ = 1166149453201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166149453487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583074726728 + 583074726729.

It is an arithmetic number, because the mean of its divisors is an integer number (583074726729).

Almost surely, 2^{1166149453457} is an apocalyptic number.

It is an amenable number.

1166149453457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166149453457 is an equidigital number, since it uses as much as digits as its factorization.

1166149453457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10886400, while the sum is 56.

The spelling of 1166149453457 in words is "one trillion, one hundred sixty-six billion, one hundred forty-nine million, four hundred fifty-three thousand, four hundred fifty-seven".