1326132666 has 48 divisors (see below), whose sum is σ = 3034414656. Its totient is φ = 417719808.

The previous prime is 1326132653. The next prime is 1326132671. The reversal of 1326132666 is 6662316231.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1326132666.

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 23 ways as a sum of consecutive naturals, for example, 15066 + ... + 53658.

It is an arithmetic number, because the mean of its divisors is an integer number (63216972).

Almost surely, 2^1326132666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326132666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1517207328).

1326132666 is an abundant number, since it is smaller than the sum of its proper divisors (1708281990).

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

1326132666 is a wasteful number, since it uses less digits than its factorization.

1326132666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38707 (or 38704 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 1326132666 is about 36416.1044868888. The cubic root of 1326132666 is about 1098.6574988426.

Adding to 1326132666 its reverse (6662316231), we get a palindrome (7988448897).

The spelling of 1326132666 in words is "one billion, three hundred twenty-six million, one hundred thirty-two thousand, six hundred sixty-six".