1166549069617 has 2 divisors, whose sum is σ = 1166549069618. Its totient is φ = 1166549069616.

The previous prime is 1166549069599. The next prime is 1166549069753. The reversal of 1166549069617 is 7169609456611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1139067387441 + 27481682176 = 1067271^2 + 165776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166549069617 - 2³¹ = 1164401585969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1166549064617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583274534808 + 583274534809.

It is an arithmetic number, because the mean of its divisors is an integer number (583274534809).

Almost surely, 2^{1166549069617} is an apocalyptic number.

It is an amenable number.

1166549069617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166549069617 is an equidigital number, since it uses as much as digits as its factorization.

1166549069617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 1166549069617 in words is "one trillion, one hundred sixty-six billion, five hundred forty-nine million, sixty-nine thousand, six hundred seventeen".