1166100561066 has 24 divisors (see below), whose sum is σ = 2712968652960. Its totient is φ = 333171588792.

The previous prime is 1166100560969. The next prime is 1166100561071. The reversal of 1166100561066 is 6601650016611.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1983163926 + ... + 1983164513.

It is an arithmetic number, because the mean of its divisors is an integer number (113040360540).

Almost surely, 2^{1166100561066} is an apocalyptic number.

1166100561066 is an abundant number, since it is smaller than the sum of its proper divisors (1546868091894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166100561066 is a wasteful number, since it uses less digits than its factorization.

1166100561066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3966328458 (or 3966328451 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

Adding to 1166100561066 its reverse (6601650016611), we get a palindrome (7767750577677).

The spelling of 1166100561066 in words is "one trillion, one hundred sixty-six billion, one hundred million, five hundred sixty-one thousand, sixty-six".