1111611106666 has 8 divisors (see below), whose sum is σ = 1673107502724. Its totient is φ = 553908605760.

The previous prime is 1111611106657. The next prime is 1111611106667. The reversal of 1111611106666 is 6666011161111.

It can be written as a sum of positive squares in 2 ways, for example, as 927505751041 + 184105355625 = 963071^2 + 429075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1111611106667) 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 3 ways as a sum of consecutive naturals, for example, 948473055 + ... + 948474226.

Almost surely, 2^{1111611106666} is an apocalyptic number.

1111611106666 is a deficient number, since it is larger than the sum of its proper divisors (561496396058).

1111611106666 is a wasteful number, since it uses less digits than its factorization.

1111611106666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896947576.

The product of its (nonzero) digits is 7776, while the sum is 37.

Adding to 1111611106666 its reverse (6666011161111), we get a palindrome (7777622267777).

The spelling of 1111611106666 in words is "one trillion, one hundred eleven billion, six hundred eleven million, one hundred six thousand, six hundred sixty-six".