11776536666 has 12 divisors (see below), whose sum is σ = 25515829482. Its totient is φ = 3925512216.

The previous prime is 11776536647. The next prime is 11776536683. The reversal of 11776536666 is 66663567711.

It can be written as a sum of positive squares in only one way, i.e., 9864661041 + 1911875625 = 99321^2 + 43725^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 327126001 + ... + 327126036.

Almost surely, 2^11776536666 is an apocalyptic number.

11776536666 is an abundant number, since it is smaller than the sum of its proper divisors (13739292816).

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

11776536666 is a wasteful number, since it uses less digits than its factorization.

11776536666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654252045 (or 654252042 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 11776536666 in words is "eleven billion, seven hundred seventy-six million, five hundred thirty-six thousand, six hundred sixty-six".