13224313451666 has 8 divisors (see below), whose sum is σ = 19836503482224. Its totient is φ = 6612145624260.

The previous prime is 13224313451647. The next prime is 13224313451719. The reversal of 13224313451666 is 66615431342231.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13224313451666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3971960 + ... + 6498083.

It is an arithmetic number, because the mean of its divisors is an integer number (2479562935278).

Almost surely, 2^{13224313451666} is an apocalyptic number.

13224313451666 is a deficient number, since it is larger than the sum of its proper divisors (6612190030558).

13224313451666 is a wasteful number, since it uses less digits than its factorization.

13224313451666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101576.

The product of its digits is 1866240, while the sum is 47.

Adding to 13224313451666 its reverse (66615431342231), we get a palindrome (79839744793897).

The spelling of 13224313451666 in words is "thirteen trillion, two hundred twenty-four billion, three hundred thirteen million, four hundred fifty-one thousand, six hundred sixty-six".