1166151051111 has 32 divisors (see below), whose sum is σ = 1593819115200. Its totient is φ = 758253900800.

The previous prime is 1166151051103. The next prime is 1166151051179. The reversal of 1166151051111 is 1111501516611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1166151051111 - 2³ = 1166151051103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166151051181) 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, 7173745 + ... + 7334501.

It is an arithmetic number, because the mean of its divisors is an integer number (49806847350).

Almost surely, 2^{1166151051111} is an apocalyptic number.

1166151051111 is a deficient number, since it is larger than the sum of its proper divisors (427668064089).

1166151051111 is a wasteful number, since it uses less digits than its factorization.

1166151051111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161219.

The product of its (nonzero) digits is 900, while the sum is 30.

Adding to 1166151051111 its reverse (1111501516611), we get a palindrome (2277652567722).

The spelling of 1166151051111 in words is "one trillion, one hundred sixty-six billion, one hundred fifty-one million, fifty-one thousand, one hundred eleven".