1166650065511 has 32 divisors (see below), whose sum is σ = 1416750870528. Its totient is φ = 939679902720.

The previous prime is 1166650065499. The next prime is 1166650065517. The reversal of 1166650065511 is 1155600566611.

It is a cyclic number.

It is not a de Polignac number, because 1166650065511 - 2¹⁹ = 1166649541223 is a prime.

It is a super-2 number, since 2×1166650065511² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166650065517) 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 in 31 ways as a sum of consecutive naturals, for example, 592716 + ... + 1638478.

It is an arithmetic number, because the mean of its divisors is an integer number (44273464704).

Almost surely, 2^{1166650065511} is an apocalyptic number.

1166650065511 is a deficient number, since it is larger than the sum of its proper divisors (250100805017).

1166650065511 is a wasteful number, since it uses less digits than its factorization.

1166650065511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045951.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1166650065511 in words is "one trillion, one hundred sixty-six billion, six hundred fifty million, sixty-five thousand, five hundred eleven".